SOC 2 Trust Services Criteria Explained: How Security, Availability, and Confidentiality Shape Compliance

Businesses that provide cloud-based software, SaaS platforms, and technology services often need to demonstrate how they protect customer information. Enterprise customers want to understand whether service providers have appropriate safeguards for sensitive data, reliable operational processes, and documented security responsibilities. This is where SOC 2 and its Trust Services Criteria become important.

Understanding the SOC 2 Trust Services Criteria can help organizations identify relevant security controls, prepare documentation, and develop a structured approach to compliance. Although SOC 2 is often discussed as a certification, it is more accurately associated with an independent examination and report on controls relevant to specified criteria.

What Are the SOC 2 Trust Services Criteria?

The SOC 2 Trust Services Criteria are developed by the American Institute of Certified Public Accountants (AICPA). They provide the framework used to evaluate controls related to five areas: Security, Availability, Processing Integrity, Confidentiality, and Privacy.

These criteria help determine which aspects of an organization’s systems and processes are relevant to an examination. Security is included in every SOC 2 examination, while the other criteria are selected according to the services provided, customer commitments, and the scope of the engagement.

For SaaS companies and other technology service providers, understanding these areas is an important step toward developing an appropriate SOC 2 compliance strategy.

1. Security: Protecting Systems Against Unauthorized Access

Security is the foundational category within the SOC 2 Trust Services Criteria. It focuses on protecting information and systems against unauthorized access that could compromise the organization’s ability to meet its objectives.

Common security controls include identity and access management, multifactor authentication, vulnerability management, security monitoring, incident response, and employee security awareness.

Organizations should establish clear procedures for granting and revoking access, reviewing permissions, monitoring suspicious activity, and responding to security incidents. They should also maintain evidence showing how relevant controls operate in practice.

For example, a company may document its access review process and retain records demonstrating that reviews occurred at the required intervals. The specific evidence needed depends on the control and the examination scope.

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2. Availability: Supporting Reliable Service Delivery

The Availability criterion addresses whether systems are available for operation and use as committed or agreed. It is particularly relevant to businesses that deliver cloud services, hosted applications, or business-critical software.

Availability-related controls may include infrastructure monitoring, backup procedures, disaster recovery planning, capacity management, and incident escalation processes.

Organizations should identify their service availability commitments and determine how they monitor performance against those commitments. Recovery procedures should be documented, and testing may help identify weaknesses before an actual disruption occurs.

Availability does not necessarily mean that every system must operate without interruption. The relevant consideration is whether the organization’s controls support its stated service commitments and applicable requirements.

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3. Processing Integrity: Maintaining Accurate and Complete Processing

Processing Integrity concerns whether system processing is complete, valid, accurate, timely, and authorized, in accordance with applicable system requirements.

This criterion can be relevant to platforms that process payments, manage business transactions, calculate financial information, or transform customer data. Depending on the service, controls may address data validation, transaction processing, error handling, reconciliation, and change management.

For example, a platform that processes customer transactions may implement validation rules and monitoring to identify incomplete or unexpected processing results. Documented procedures for investigating errors can also help establish accountability.

Organizations should evaluate whether Processing Integrity belongs in their SOC 2 scope based on the nature of their services and the commitments they make to customers.

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4. Confidentiality: Protecting Sensitive Business Information

Confidentiality focuses on protecting information designated as confidential from unauthorized disclosure. This may include business plans, customer records, intellectual property, contracts, and other sensitive information.

Relevant controls may include data classification, encryption, access restrictions, secure data transfer, retention policies, and secure disposal procedures.

Organizations should understand where confidential information is stored, which employees or systems can access it, and how it is protected throughout its lifecycle. Supplier relationships may also need consideration when third parties handle confidential information.

Clear data handling procedures can help employees understand their responsibilities and support consistent implementation of confidentiality safeguards.

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5. Privacy: Managing Personal Information

The Privacy criterion addresses how personal information is collected, used, retained, disclosed, and disposed of in accordance with applicable privacy commitments and criteria.

Unlike confidentiality, which focuses on protecting designated information from unauthorized disclosure, privacy is concerned with the handling of personal information across its lifecycle.

Depending on the organization’s activities, privacy-related processes may involve consent and notice practices, data subject requests, retention requirements, third-party sharing, and procedures for handling personal information.

Companies should assess the personal information they collect and process, document relevant commitments, and evaluate whether their practices align with applicable requirements. Including Privacy in a SOC 2 examination does not, by itself, establish compliance with every privacy law or regulation.

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How the SOC 2 Common Criteria Support the Assessment

In addition to understanding the five Trust Services Criteria categories, organizations should become familiar with the SOC 2 Common Criteria. These criteria address broader control areas such as the control environment, communication, risk assessment, monitoring, and control activities.

Common Criteria are organized under the CC1 through CC9 groupings. They help auditors evaluate how an organization’s governance, risk management, and operational controls support its security objectives.

For example, risk assessment processes can help identify threats to business objectives, while monitoring activities can help determine whether controls continue to operate as intended. Change management and logical access controls can provide additional safeguards for systems and information.

Organizations preparing for a SOC 2 examination should map relevant controls to the applicable criteria and maintain appropriate supporting evidence.

SOC 2 Type 1 vs. Type 2: What Is the Difference?

Understanding the type of SOC 2 report is another important part of compliance planning.

A SOC 2 Type 1 examination evaluates the design of controls at a specified point in time. A SOC 2 Type 2 examination evaluates control design and operating effectiveness over a defined period.

A Type 1 report may be appropriate for evaluating control design at a particular stage, while a Type 2 report provides evidence about control operation over the examination period. The right approach depends on customer expectations, organizational readiness, and the scope of the engagement.

For Type 2 examinations, organizations need processes that support consistent control operation and evidence retention throughout the relevant period.

Practical Steps for Preparing for SOC 2

A structured readiness process can help businesses identify gaps before an independent examination. Organizations can begin with the following activities:

1. Define the examination scope. Identify the services, systems, infrastructure, and business processes relevant to the examination.
2. Assess current controls. Review access management, security monitoring, incident response, change management, and other relevant practices.
3. Identify applicable criteria. Determine which Trust Services Criteria are relevant to the services and commitments being examined.
4. Document policies and procedures. Ensure documentation reflects actual operational practices and assigns clear responsibilities.
5. Organize supporting evidence. Establish a repeatable process for collecting and retaining records relevant to each control.
6. Address identified gaps. Prioritize remediation according to risk and establish owners and target dates.
7. Review progress regularly. Monitor control activities and update procedures as the organization and its systems change.

These activities can improve readiness, but they do not guarantee a particular audit outcome. An independent examination assesses the controls within the agreed scope.

Why the Trust Services Criteria Matter for Growing Businesses

The SOC 2 Trust Services Criteria provide a structured way for organizations to evaluate controls relevant to their services and customer commitments. They can also help businesses organize security responsibilities, improve documentation, and respond more consistently to customer due diligence requests.

However, SOC 2 should not be treated as a universal guarantee of security. The usefulness of a report depends on its scope, the criteria included, and the controls examined. Organizations should review these details when evaluating a service provider’s report.

Businesses seeking guidance on SOC 2 readiness and related compliance matters may explore the services offered by Decrypt Compliance, which works with technology companies on SOC 2 and ISO 27001-related compliance and audit services.

Learn more at Decrypt Compliance.

Conclusion

Understanding the SOC 2 Trust Services Criteria is an important step for technology companies that want to develop a structured approach to security and compliance. Security, Availability, Processing Integrity, Confidentiality, and Privacy each address different considerations, and the criteria selected for an examination should reflect the organization’s services and commitments.

By defining an appropriate scope, implementing relevant controls, maintaining reliable evidence, and reviewing practices regularly, organizations can prepare more effectively for SOC 2 examinations while strengthening their broader approach to information security.