ISO 27001 vs SOC 2 vs PCI DSS: An Enterprise Assurance and Compliance Guide

/ Mon, 09/07/2026 - 10:39

When evaluating a data center, cloud provider, SaaS platform, managed service provider, or enterprise technology vendor, the same acronyms frequently appear in security questionnaires and procurement documents:

ISO 27001
SOC 2
PCI DSS

These standards and reports are often displayed as security badges on websites and sales presentations. However, seeing a logo is not the same as understanding what the underlying certificate, audit report, or compliance validation actually covers.

ISO/IEC 27001, SOC 2, and PCI DSS do not provide the same type of assurance. ISO/IEC 27001 evaluates an Information Security Management System, SOC 2 reports on controls at a service organization, and PCI DSS defines security requirements for protecting payment account data and the Cardholder Data Environment.

They are also not all "certifications" in the same technical sense:

ISO/IEC 27001 is a certifiable management system standard.
SOC 2 results in an independent attestation report rather than a certificate.
PCI DSS is a payment security standard whose compliance can be validated through mechanisms such as ROC, SAQ, and Attestation of Compliance depending on the entity and assessment model.

The correct procurement question is therefore not simply:

"Does the provider have these logos?"

A better question is:

"Which services, systems, locations, controls, and reporting periods are actually covered by these assurance mechanisms?"

In this guide, we explain what ISO 27001, SOC 2, and PCI DSS mean, how they differ, the difference between SOC 2 Type I and Type II, how PCI DSS compliance is validated, what an ISO 27001 scope means, and which questions enterprise buyers should ask during vendor security due diligence.

Ixpanse's current security and compliance information is available on the Certificates page.

ISO 27001, SOC 2, and PCI DSS at a Glance

ISO 27001 evaluates how an organization manages information security risk. SOC 2 provides assurance over controls at a service organization. PCI DSS focuses specifically on protecting payment account data and systems that are part of or can affect the Cardholder Data Environment.

Framework	Core Question	Primary Output	Typical Use
ISO/IEC 27001	How do you systematically manage information security risk?	Certification	Information security management across industries
SOC 2	How are controls over the service system designed and operating?	Independent attestation report	SaaS, cloud, and technology service providers
PCI DSS	How is payment account data and the CDE protected?	Compliance validation such as ROC, SAQ, and AoC	Payment card ecosystem

These frameworks are not direct alternatives.

A technology provider may use ISO/IEC 27001 for its broader information security management system and SOC 2 to provide customers with detailed assurance about service controls. If the organization stores, processes, transmits, or can affect payment account data environments, PCI DSS may also become relevant.

Why Is "Security Certification" an Incomplete Term?

Calling ISO 27001, SOC 2, and PCI DSS three security certifications is technically inaccurate because they represent different assurance models.

ISO/IEC 27001 can result in certification by a certification body.
SOC 2 results in an examination report issued by an independent CPA or CPA firm.
PCI DSS compliance may be documented using assessment and attestation mechanisms defined for the relevant merchant or service provider scenario.

For enterprise procurement, a more accurate umbrella concept is security assurance and compliance.

What Is ISO 27001?

ISO/IEC 27001 is the international standard that defines requirements for establishing, implementing, maintaining, and continually improving an Information Security Management System - ISMS.

ISO 27001 does not prescribe a single firewall, endpoint-security product, or cybersecurity technology.

Instead, it treats information security as a management system involving:

People
Processes
Technology
Risk management
Governance

The goal is to protect the:

Confidentiality of information
Integrity of information
Availability of information and systems

using a systematic risk-based approach.

Are ISO 27001 and ISO/IEC 27001 the Same?

Yes. "ISO 27001" is the common abbreviated name, while the formal designation is ISO/IEC 27001 because the standard is jointly published within the ISO and IEC framework.

The formal reference for the current main edition is:

ISO/IEC 27001:2022

Using "ISO 27001" in normal business communication is common, while formal security and audit documentation should normally use the full designation.

What Is the Current Version of ISO 27001?

The current main edition is ISO/IEC 27001:2022. ISO/IEC 27001:2022/Amd 1:2024 - Climate action changes - also applies to the standard.

When evaluating a provider, the question should therefore go beyond:

"Are you ISO 27001 certified?"

Buyers should confirm which edition appears on the current certificate and whether the certification itself remains valid.

What Does ISO 27001 Cover?

ISO 27001 addresses information security through an organization-wide management system rather than through one specific technology control.

Security areas associated with the ISO/IEC 27001 and ISO/IEC 27002 framework can include:

Information security policies
Asset management
Identity and access management
Authorization
Cryptography
Physical security
Supplier security
Cloud-service security
Logging and monitoring
Information security incident management
Backup
Business continuity
Secure development
Change management
Risk assessment

Which controls are relevant to a specific organization depends on its risk assessment and defined ISMS scope.

What Does an ISO 27001 Certificate Actually Prove?

An ISO 27001 certificate demonstrates that the Information Security Management System within the stated certification scope has been independently assessed against ISO/IEC 27001 requirements. It does not guarantee that the organization will never experience a security incident.

The certification provides evidence that the organization has processes for areas such as:

Identifying information security risks
Assessing risk
Selecting appropriate controls
Defining policies and responsibilities
Monitoring the ISMS
Conducting internal audits
Performing management reviews
Continually improving the management system

The scope statement on the certificate is therefore as important as the existence of the certificate itself.

Why Is ISO 27001 Scope Important?

An organization holding an ISO 27001 certificate does not automatically mean that every service, office, data center, product, subsidiary, and customer environment is included in the certification scope.

A scope may cover only:

A specific data center
A SaaS product
A cloud operations unit
A specific geography
A particular service portfolio

Enterprise buyers should therefore ask:

"Is the service we are purchasing, and the location where our data will be processed or stored, explicitly included in the ISO 27001 scope?"

What Is the ISO 27001 Statement of Applicability - SoA?

The Statement of Applicability - SoA - is a core ISMS document that identifies which information security controls are applicable to the organization, which are implemented, and why any controls are excluded.

It provides deeper context than the certificate itself.

However, the SoA may contain sensitive security or operational information and is not necessarily a public document.

For critical vendor assessments, customers can ask whether relevant scope and control information can be discussed or shared under appropriate confidentiality arrangements.

What Is the Difference Between ISO 27001 and ISO 27002?

ISO/IEC 27001 defines certifiable ISMS requirements, while ISO/IEC 27002 provides guidance on information security controls.

Criterion	ISO/IEC 27001	ISO/IEC 27002
Purpose	Defines ISMS requirements	Provides security-control guidance
Certifiable?	Yes	No
Primary focus	Management system	Information security controls

What Is SOC 2?

SOC 2 is an AICPA attestation reporting framework used to examine controls at a service organization that are relevant to security, availability, processing integrity, confidentiality, or privacy.

SOC stands for:

System and Organization Controls

SOC 2 is particularly common among:

SaaS providers
Cloud providers
Managed Service Providers
Technology platforms processing customer data
Fintech companies
Hosting providers
Data infrastructure providers

Is SOC 2 a Certification?

No. SOC 2 is not a certification. It is an independent attestation report issued as the result of a SOC 2 examination performed by an appropriately licensed CPA or CPA firm.

Therefore:

"We are SOC 2 certified"

is less precise than:

"We have completed a SOC 2 Type II examination"

or:

"We have a SOC 2 Type II report."

What Are the SOC 2 Trust Services Criteria?

SOC 2 examinations use AICPA Trust Services Criteria relevant to security, availability, processing integrity, confidentiality, and privacy.

Security

Addresses protection of information and systems against unauthorized access and other risks that could compromise security objectives.

Availability

Addresses whether information and systems are available for operation and use in accordance with commitments and system requirements.

Processing Integrity

Addresses whether system processing is complete, valid, accurate, timely, and authorized according to the organization's objectives.

Confidentiality

Addresses protection of information designated as confidential.

Privacy

Addresses the collection, use, retention, disclosure, and disposal of personal information in accordance with privacy objectives.

A vendor saying only "we have SOC 2" is therefore not the end of the assessment.

Buyers should also determine which Trust Services Criteria are included in the actual report.

What Is the Difference Between SOC 2 Type I and Type II?

SOC 2 Type I evaluates control design at a specified date. SOC 2 Type II evaluates control design and operating effectiveness over a defined period of time.

Criterion	SOC 2 Type I	SOC 2 Type II
Time dimension	Specified date	Specified period
Control design	Evaluated	Evaluated
Operating effectiveness over time	Not evaluated across a period	Evaluated
Evidence model	Point-in-time	Period-of-time
Vendor due-diligence value	Useful design evidence	Stronger evidence of sustained operation

Organizations seeking evidence that controls have operated consistently over time generally place more weight on a Type II report.

What Should You Review in a SOC 2 Type II Report?

A SOC 2 Type II report should not be evaluated only by looking for "Type II" on the cover. The auditor's opinion, reporting period, system description, exceptions, subservice organizations, and customer responsibilities also matter.

Important areas include:

Service auditor's opinion
Reporting period
System description
Trust Services Criteria in scope
Controls tested
Testing procedures
Testing results
Exceptions or deviations
Subservice organizations
Complementary User Entity Controls - CUECs

What Is a SOC 2 Exception?

A SOC 2 exception is a condition identified during testing where a control did not operate exactly as expected or did not fully meet the tested criteria.

The presence of an exception does not automatically mean the provider is insecure.

Buyers should assess:

The nature of the exception
How many samples were affected
Which control was involved
The potential security impact
Management's response
Any remediation performed

What Are Complementary User Entity Controls - CUECs?

CUECs are controls that customers are expected to implement in their own environment for the service organization's control system to achieve its intended objectives.

A provider may offer secure authentication capabilities, for example, while the customer remains responsible for:

Managing its own users
Reviewing privileges
Protecting credentials
Enabling available MFA controls
Removing access when users leave

A SOC 2 report therefore does not mean all security responsibility transfers to the provider.

Is a SOC 2 Report Public?

Detailed SOC 2 reports are generally restricted-use documents and are commonly shared with customers or qualified prospects through controlled processes, often under confidentiality terms.

They can contain detailed descriptions of:

Security controls
Architecture
Testing procedures
Exceptions
Operational responsibilities

SOC 3 is a different reporting option designed for broader distribution and provides less detailed control-testing information.

What Is a SOC 2 Bridge Letter?

A SOC 2 bridge letter is a management-provided document commonly used to address the period between the end date of the latest SOC 2 report and the customer's current vendor-assessment date.

It may describe whether management is aware of material changes to the control environment after the SOC 2 reporting period.

A bridge letter:

Is not a new SOC 2 examination
Does not extend the auditor's opinion
Does not replace a new Type II report

It can nevertheless provide additional due-diligence context when the latest SOC report ended several months earlier.

What Is PCI DSS?

PCI DSS - Payment Card Industry Data Security Standard - is a global payment security standard that defines technical and operational requirements for protecting payment account data.

PCI DSS is maintained by the PCI Security Standards Council.

Its applicability is relevant to entities involved in environments that:

Store cardholder data
Process cardholder data
Transmit cardholder data
Can impact the security of the Cardholder Data Environment

Depending on the architecture, this can include:

Merchants
Payment processors
Acquirers
Issuers
Payment gateways
Service providers

What Is the Current Version of PCI DSS?

PCI DSS v4.0.1 is the current active version supported by the PCI Security Standards Council.

PCI DSS v4.0.1 was a limited revision of v4.0 intended primarily to clarify requirements and guidance rather than introduce a new major security framework.

PCI DSS v4.x requirements that were previously identified as future-dated became effective on 31 March 2025.

In 2026, those applicable requirements must therefore be fully considered during relevant PCI DSS assessments rather than treated merely as future best practices.

What Does PCI DSS Cover?

PCI DSS includes technical and operational requirements designed to protect payment account data and the systems supporting that environment.

Major control areas include:

Network security controls
Secure system configuration
Protection of stored account data
Strong cryptography during transmission
Protection from malicious software
Secure software development
Vulnerability management
Identity and access management
Physical access controls
Logging and monitoring
Security testing
Information security policies

For a security-focused perspective on PCI DSS environments, see Effective Data Protection Strategies Against Cyber Attacks for PCI DSS-Compliant Companies.

What Is a Cardholder Data Environment - CDE?

The Cardholder Data Environment - CDE - includes the people, processes, and system components that store, process, or transmit cardholder data or sensitive authentication data, as well as systems that can affect the security of that environment.

Correctly defining the CDE is one of the most important parts of PCI DSS scoping.

Incorrect scope can result in:

Relevant systems being excluded from assessment
An unnecessarily large compliance environment
Higher compliance cost
Unclear shared responsibilities

Is PCI DSS a Certification?

PCI DSS does not operate as a single universal certificate issued identically to every organization. Compliance validation varies according to the entity, payment architecture, assessment model, and requirements of the relevant acquiring bank or payment brand.

Common validation documents include:

ROC - Report on Compliance

A detailed report used to document the results of a comprehensive PCI DSS assessment.

SAQ - Self-Assessment Questionnaire

A structured self-assessment mechanism available to eligible merchants and service providers that meet the requirements of the relevant SAQ type.

AoC - Attestation of Compliance

An attestation document that records the compliance result associated with the relevant PCI DSS assessment.

Therefore, asking a vendor:

"Please send your PCI certificate."

is less precise than asking:

"Which PCI DSS validation method applies to your service, and does your current AoC cover the service we are purchasing?"

What Are QSA and ASV?

QSA - Qualified Security Assessor

A QSA is an assessor organization qualified through the PCI SSC program to perform applicable PCI DSS assessments.

ASV - Approved Scanning Vendor

An ASV is a vendor approved by PCI SSC to perform external vulnerability scans used for applicable PCI DSS requirements.

Depending on the merchant or service-provider assessment model, QSA assessments, self-assessment, ASV scanning, penetration testing, and other validation mechanisms may be required.

Does Outsourcing Payment Processing Eliminate PCI DSS Responsibility?

No. Fully outsourcing payment processing to a PCI DSS-compliant third-party service provider can significantly reduce a merchant's PCI scope, but it does not automatically eliminate all PCI DSS responsibilities.

Responsibilities can still include:

Confirming the service provider's PCI DSS status
Defining security responsibilities contractually
Monitoring third-party compliance status
Protecting the merchant's own website and systems
Maintaining applicable merchant controls

The exact validation model depends on how payment data flows through the environment.

Does a Redirect-Based Payment Page Still Have PCI DSS Requirements?

Yes. Redirecting customers to a PCI DSS-compliant third-party payment provider can significantly reduce scope, but it does not necessarily remove all merchant security requirements.

Under current PCI SSC guidance, e-commerce merchants completing SAQ A can still have external vulnerability scanning requirements for merchant e-commerce webpages even when payment processing is outsourced.

This can include merchant webpages that:

Redirect the customer to a third-party service provider
Use an embedded third-party payment iframe

PCI SSC also distinguishes this from the SAQ A script-related eligibility criterion, which has different applicability rules for pure redirect scenarios.

The practical lesson is:

Outsourcing payment processing reduces scope, but the security of the merchant-controlled e-commerce environment still matters.

What Is the Difference Between ISO 27001, SOC 2, and PCI DSS?

The main differences are their purpose, scope, assurance model, and the type of evidence they produce.

Criterion	ISO/IEC 27001	SOC 2	PCI DSS
Primary objective	Information security management	Assurance over service-organization controls	Payment account data security
Nature	International management system standard	Attestation reporting framework	Payment security standard
Output	Certificate	Type I or Type II report	ROC, SAQ, AoC, and applicable validations
Primary focus	Risk management and ISMS	Control design and operating effectiveness	CDE and payment account data
Typical sector	Industry-neutral	Technology and service organizations	Payment card ecosystem
Time dimension	Continuous management system	Specified date or period	Recurring compliance assessment
Scope important?	Yes	Yes	Yes
Guarantees zero incidents?	No	No	No

What Is the Difference Between ISO 27001 and SOC 2?

ISO 27001 evaluates whether an organization operates an information security management system aligned with an international standard, while SOC 2 provides detailed assurance over controls relevant to a particular service system.

ISO 27001 primarily asks:

"Do you have a systematic and continually managed approach to information security risk?"

SOC 2 asks more directly:

"How are the controls in this service system designed, and for Type II, did they operate effectively during the examination period?"

Organizations serving both international enterprise procurement and North American customers may therefore choose to maintain both forms of assurance.

What Is the Difference Between ISO 27001 and PCI DSS?

ISO 27001 addresses information security risk across the defined ISMS, while PCI DSS focuses specifically on protecting payment account data and the Cardholder Data Environment.

ISO 27001 may address:

People
Processes
Technology
Physical security
Supplier management
Business continuity

across the organization's defined scope.

PCI DSS creates more specific payment-security requirements around systems connected to payment account data.

What Is the Difference Between SOC 2 and PCI DSS?

SOC 2 provides assurance over service-organization controls, while PCI DSS defines specific security requirements for environments connected to payment account data.

A SaaS provider may have a SOC 2 Type II report without being in PCI DSS scope if its services have no relationship with payment account data.

A payment gateway or payment-processing service may, by contrast, have significant PCI DSS responsibilities.

Can a Company Have ISO 27001, SOC 2, and PCI DSS at the Same Time?

Yes. These frameworks serve different purposes, so an organization may use all three when its service model and customer requirements justify them.

For example:

ISO/IEC 27001 for enterprise information security management
SOC 2 Type II for customer assurance over service controls
PCI DSS for the payment account data environment

The important point is not the number of badges but whether each assurance mechanism covers the service the customer actually uses.

Which Framework Matters for Which Type of Organization?

Organization or Service Type	Commonly Relevant Assurance	Why?
Enterprise data center	ISO 27001	Information security and operational management system
SaaS provider	ISO 27001 + SOC 2	ISMS plus detailed service-control assurance
Payment gateway	PCI DSS + ISO 27001	Payment security plus broader information security management
Fintech platform	PCI DSS / SOC 2 / ISO 27001	Depends on payment architecture and service model
Managed Service Provider	ISO 27001 + potentially SOC 2	Security management plus service-control assurance
E-commerce company	PCI DSS scope assessment + broader security controls	Depends on payment integration architecture

This table is a general procurement guide, not a substitute for a formal scope, contractual, or regulatory assessment.

Do ISO 27001, SOC 2, or PCI DSS Guarantee That a Provider Is Secure?

No. ISO 27001 certification, a SOC 2 report, or PCI DSS compliance does not guarantee that an organization will never experience a cyber incident.

These assurance mechanisms can provide evidence of:

Security governance
Defined controls
Risk-management processes
Control testing
Compliance with defined requirements

However, incidents can still result from:

Zero-day vulnerabilities
Human error
Social engineering
Systems outside the audit scope
New attack techniques
Customer-side misconfiguration
Third-party failures

Security assurance is evidence of risk management, not proof of zero risk.

What Should You Check Beyond a Certification Badge?

Vendor due diligence should focus on scope, recency, independent verification, control effectiveness, and customer responsibilities rather than the logo alone.

1. Scope

Is the service you are purchasing explicitly covered?

2. Location

Is the data center, cloud region, or operational entity handling your data included?

3. Validity and Reporting Period

Is the certificate or audit report current?

4. Independent Auditor or Certification Body

Who performed the assessment and under what accreditation or professional framework?

5. SOC 2 Type

Is the report Type I or Type II?

6. SOC 2 Exceptions

Were exceptions identified during control testing?

7. PCI DSS Validation Model

Is the entity using a ROC, SAQ, AoC, or another applicable validation mechanism?

8. Shared Responsibility

Which controls remain the customer's responsibility?

Which Questions Should You Ask About ISO 27001?

Which edition of ISO/IEC 27001 appears on the certificate?
What is the certificate number?
Which certification body issued it?
Is the certification body appropriately accredited?
What is the exact certification scope?
Is our service included?
Is the location holding our data included?
Is the certificate currently valid?
When was the latest surveillance audit?
Were any major nonconformities identified?

Which Questions Should You Ask About SOC 2?

Is the report Type I or Type II?
What is the reporting period?
Which systems and services are included?
Which Trust Services Criteria are covered?
What is the service auditor's opinion?
Were any exceptions identified?
How are subservice organizations treated?
Is the carve-out method used for any relevant providers?
What are the CUECs?
Can the report be reviewed under NDA?
Is a bridge letter available for the period after the report end date?

Which Questions Should You Ask About PCI DSS?

What is the PCI DSS v4.0.1 scope?
Are you assessed as a merchant or service provider?
Which services are included in the current AoC?
When was the last assessment completed?
Is a ROC or SAQ used?
Was a QSA involved?
How is the Cardholder Data Environment defined?
Is the service processing our data explicitly in scope?
Which third-party service providers are involved?
Is there a responsibility matrix?
Are applicable ASV scan requirements current?

Do ISO 27001, SOC 2, or PCI DSS Make an Organization GDPR-Compliant?

No. ISO 27001, SOC 2, and PCI DSS can support important security controls, but none of them automatically establishes complete GDPR or other privacy-law compliance.

These frameworks may support areas such as:

Access control
Risk management
Logging
Encryption
Security incident management
Data protection

Privacy regulations can additionally address:

Lawful basis for processing
Transparency
Data-subject rights
Retention and deletion
International data transfers
Controller-processor relationships

For the infrastructure and jurisdiction perspective, see What Is Data Sovereignty?.

What Is the Difference Between Certification and Security Operations?

Certification and audit provide evidence that security processes or controls meet defined criteria. Security operations are responsible for keeping those controls effective every day.

Secure enterprise infrastructure still requires continuous activities such as:

24/7 monitoring
SIEM
Vulnerability management
Patch management
Access reviews
Incident response
Backup
Disaster recovery
Capacity monitoring

For the operational model, see What Are Managed Services?.

Do Certifications Eliminate the Attack Surface?

No. Even organizations operating mature security-management systems can continuously create new exposure through cloud resources, APIs, identities, SaaS applications, and third-party integrations.

Compliance should therefore be supported by ongoing activities such as:

Asset discovery
Attack Surface Management
Vulnerability management
Identity governance
Security monitoring

For the wider visibility problem, see What Is an Attack Surface?.

How Should Security Assurance Be Evaluated When Choosing a Data Center?

Certifications and audit reports are only one layer of a data center assessment. Physical infrastructure, resilience, power, cooling, connectivity, data protection, and operational capability must also be reviewed.

Enterprise evaluation should consider:

ISO/IEC 27001 scope
PCI DSS scope where relevant
Physical security
Tier architecture
Power redundancy
Cooling redundancy
Carrier-neutral connectivity
24/7 operations
Backup capability
Disaster recovery

To understand how infrastructure resilience differs from security assurance, see Tier III or Tier IV? Data Center Classification Guide.

Enterprise Vendor Security Due-Diligence Checklist

The following checklist can be used when assessing a cloud, SaaS, data center, or managed-service provider:

Which security standards, certificates, and audit reports are available?
Are the documents current?
Is the service being purchased included in scope?
Is the relevant data center or region included?
Who performed the independent assessment?
Is the ISO certification body appropriately accredited?
Is the SOC 2 report Type I or Type II?
When did the SOC 2 reporting period end?
Were SOC 2 exceptions identified?
Which CUECs apply to the customer?
If PCI DSS applies, which validation method was used?
Does the current PCI AoC cover the service?
Which third-party service providers are involved?
Is there a shared-responsibility matrix?
When was the latest penetration test?
What are the vulnerability-remediation SLAs?
What is the security-incident notification commitment?
In which countries is data stored and processed?
Who has administrative access?
How is customer data deleted when the service ends?

What Are Common Red Flags When Reviewing Security Assurance?

The following situations deserve additional investigation:

A certification logo is displayed but the underlying document cannot be reviewed.
The scope statement is unclear.
The certificate has expired.
The certificate belongs to a different legal entity.
The purchased service is outside the certification scope.
The provider says it is "SOC 2 certified" but cannot identify the report type.
The SOC 2 reporting period is outdated.
SOC 2 exceptions are not explained.
PCI DSS is represented only by a logo with no explanation of the AoC scope.
Third-party responsibilities are unclear.
Data location and subprocessors are not disclosed.

How Does Ixpanse Approach ISO 27001 and PCI DSS?

Ixpanse's current Certificates page publishes ISO 27001:2022 and PCI DSS v4.0.1 security and compliance information.

These frameworks support the wider Ixpanse approach to areas such as:

Information security management
Risk management
Access control
Data security
Payment-data security
Operational security

The same procurement principle should still be applied:

Evaluate the scope and current evidence, not only the name of the standard.

Ixpanse's Data Protection service covers data protection, disaster recovery, threat analysis, Multi-Factor Authentication, Managed Firewall, DDoS Protection, and related security capabilities.

Operational infrastructure can also be supported through Managed Services, including 24/7 monitoring, virtual-server management, and replication management.

Organizations designing a data-layer Zero Trust and cyber-recovery model can also review Zero Trust Data Security with Rubrik.

To evaluate how Ixpanse's current assurance scope aligns with your infrastructure, data-protection, and compliance requirements, contact the Ixpanse expert team.

Conclusion

ISO 27001, SOC 2, and PCI DSS are not interchangeable certifications. They are different assurance and compliance mechanisms designed to answer different security questions.

ISO/IEC 27001 focuses on the Information Security Management System.
The current main edition is ISO/IEC 27001:2022, with a 2024 Climate Action Amendment.
The scope of an ISO 27001 certificate is as important as the certificate itself.
SOC 2 is an attestation report, not a certificate.
SOC 2 Type I examines control design at a specified date.
SOC 2 Type II also provides evidence about operating effectiveness over a defined period.
SOC 2 exceptions and CUECs should be reviewed during due diligence.
PCI DSS v4.0.1 focuses on payment account data and the Cardholder Data Environment.
PCI DSS does not use one universal certificate for every organization.
Outsourcing payment processing does not necessarily remove every PCI DSS responsibility.
ISO 27001, SOC 2, and PCI DSS do not automatically establish GDPR compliance.
None of these frameworks guarantees zero cyber incidents.
Scope, recency, independent verification, and audit depth matter more than the badge alone.

The most useful vendor-security question is therefore not:

"Which certifications do you have?"

It is:

"What exactly do your certificates and audit reports prove about the service, systems, locations, and controls that will handle our data?"

Frequently Asked Questions About ISO 27001, SOC 2, and PCI DSS

What is ISO 27001?

ISO/IEC 27001 is the international standard that defines requirements for establishing, implementing, maintaining, and continually improving an Information Security Management System.

What is the current version of ISO 27001?

The current main edition is ISO/IEC 27001:2022. ISO/IEC 27001:2022/Amd 1:2024 - Climate action changes - also applies to the standard.

What does ISO 27001 certification prove?

It shows that the Information Security Management System within the stated certification scope has been independently assessed against ISO/IEC 27001 requirements. It does not guarantee zero security incidents.

What is the difference between ISO 27001 and ISO 27002?

ISO/IEC 27001 defines certifiable ISMS requirements. ISO/IEC 27002 provides guidance on information security controls and is not independently certifiable in the same way.

What does ISO 27001 scope mean?

The scope defines which organizations, services, systems, activities, and locations are included within the certified Information Security Management System.

What is SOC 2?

SOC 2 is an AICPA attestation reporting framework used to examine controls at a service organization that are relevant to security, availability, processing integrity, confidentiality, or privacy.

Is SOC 2 a certification?

No. SOC 2 is an independent attestation report produced following a SOC 2 examination rather than a certification.

What is the difference between SOC 2 Type I and Type II?

Type I evaluates control design at a specified date. Type II evaluates control design and operating effectiveness over a defined period.

Is SOC 2 Type II stronger than Type I?

For vendor due diligence, Type II generally provides stronger evidence of sustained control operation because operating effectiveness is tested over a period rather than only at a point in time.

What is a SOC 2 exception?

A SOC 2 exception is a test result showing that a control did not operate exactly as expected for one or more tested items or conditions.

What are CUECs?

Complementary User Entity Controls are controls customers are expected to implement in their own environments for the service organization's control objectives to be achieved as intended.

What is PCI DSS?

PCI DSS is the Payment Card Industry Data Security Standard, which defines security requirements for protecting payment account data and the Cardholder Data Environment.

What is the current version of PCI DSS?

PCI DSS v4.0.1 is the current active version supported by the PCI Security Standards Council.

Is there a PCI DSS certificate?

PCI DSS does not use one universal certificate for every organization. Compliance can be validated through mechanisms such as ROC, SAQ, and Attestation of Compliance depending on the assessment model.

What is a ROC?

ROC - Report on Compliance - is a detailed report used to document the results of a comprehensive PCI DSS assessment.

What is a SAQ?

SAQ - Self-Assessment Questionnaire - is a structured PCI DSS self-assessment mechanism available to eligible merchants and service providers that meet the requirements of the relevant SAQ type.

What is an AoC?

AoC - Attestation of Compliance - is the formal attestation documenting the compliance result associated with a PCI DSS assessment.

Does outsourcing payment processing remove PCI DSS responsibility?

No. Outsourcing can significantly reduce PCI scope, but merchants can retain responsibilities for service-provider oversight, contracts, website security, and other applicable PCI DSS controls.

Are redirect payment pages still relevant to PCI DSS?

Yes. Redirect-based payment architectures can reduce scope, but current PCI SSC guidance confirms that SAQ A merchants can still have applicable security and ASV scanning responsibilities for merchant e-commerce webpages.

What is the difference between ISO 27001 and SOC 2?

ISO 27001 evaluates an Information Security Management System against an international standard. SOC 2 provides detailed attestation assurance over controls relevant to a service organization's system.

What is the difference between ISO 27001 and PCI DSS?

ISO 27001 addresses broader information security risk management, while PCI DSS specifically focuses on payment account data and systems that are part of or can affect the Cardholder Data Environment.

Can a company have ISO 27001, SOC 2, and PCI DSS at the same time?

Yes. The three frameworks serve different purposes and can be used together when an organization's services, payment architecture, and customer requirements make them relevant.

Does ISO 27001 make a company GDPR-compliant?

No. ISO 27001 supports many technical and organizational security measures, but GDPR also contains separate legal requirements relating to processing, transparency, data-subject rights, retention, and international transfers.

Can a certified or compliant organization still suffer a data breach?

Yes. Certifications and audit reports provide evidence of defined security and risk-management practices but do not guarantee that cyber incidents will never occur.

Which security standards does Ixpanse currently publish?

Ixpanse's current Certificates page publishes ISO 27001:2022 and PCI DSS v4.0.1 security and compliance information. Buyers should review the current certificates and scope information when conducting due diligence.