SOC 2 (Service Organisation Control 2)

SOC 2 (Service Organisation Control 2) is a framework for independent auditor reports on the controls a service organisation operates to protect customer data. Developed under the auspices of the American Institute of Certified Public Accountants (AICPA), a SOC 2 report assesses controls against one or more Trust Services Criteria, security, availability, processing integrity, confidentiality and privacy. For buyers of a SaaS ERP or other cloud service, a SOC 2 report offers third-party evidence that the provider's stated security and operational controls are actually designed, and in the case of a Type II report, operating effectively, rather than relying on the provider's own assurances alone.

What SOC 2 is

SOC 2 is an attestation report produced by an independent auditor about a service organisation's internal controls relevant to the data it handles on behalf of customers. It is built around the Trust Services Criteria. Security (sometimes called the common criteria) is always included; availability, processing integrity, confidentiality and privacy are added depending on the service and what the provider chooses to be assessed against. The report describes the provider's system, the controls in place, and the auditor's opinion on them. It is widely used by cloud and SaaS providers as a way to give many customers credible, standardised assurance without each customer auditing the provider directly.

Type I versus Type II

SOC 2 reports come in two forms, and the difference is significant:

• Type I assesses whether controls are suitably designed at a specific point in time.
• Type II assesses whether those controls also operated effectively over a defined review period, typically several months to a year.

A Type II report carries more weight because it tests operating effectiveness over time, not just design on a single date. When evaluating a provider, buyers should note which type they hold, which Trust Services Criteria are in scope, and the period the report covers.

SOC 2 in the European and ERP context

SOC 2 originates in the United States, but it is widely referenced internationally and frequently requested in DACH procurement as evidence of a provider's control environment. It is not a substitute for European obligations: it does not by itself demonstrate compliance with GDPR, and where personal data is processed a provider still needs an appropriate data processing agreement. SOC 2 is also distinct from certifications under the ISO 27000 family, which some European providers hold instead of, or alongside, SOC 2. For security-relevant obligations such as NIS-2, a SOC 2 report can serve as supporting evidence of controls but does not on its own satisfy the regulation. The report complements, and gives substance to, the commitments a provider makes in its SLA.

How buyers should use it

For an SME selecting an ERP or hosting provider, a SOC 2 report is a useful but not sufficient input. Buyers should request the actual report (often under NDA) rather than relying on a badge, and read which criteria and which period it covers, whether it is Type I or Type II, and whether the auditor noted exceptions. A current Type II report covering security and the criteria relevant to the service indicates a mature control environment. It should be weighed together with European-specific requirements, contractual terms and the provider's SLA, rather than treated as a complete answer to due diligence on its own.

Related Topics

• SLA
• SaaS ERP
• NIS-2