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home / guides / soc 2 requirements

What are the SOC 2 requirements?

What SOC 2 actually asks of you, in plain language: the five criteria, the controls, and the evidence auditors want.

Last reviewed June 2026 · by traztech, security & compliance for startups
Short answer

SOC 2 is built on five Trust Services Criteria: Security, Availability, Processing Integrity, Confidentiality, and Privacy. Only Security (the "common criteria") is mandatory; you add the others based on what you promise customers. Meeting the requirements means having documented policies, technical controls (access control, encryption, logging, change management), and evidence that they operated over time, not just on paper.

The numbers

What the research says about soc 2 requirements

The figures that shape the short answer above. Where they come from is cited in the sections that follow.

5
Trust Services Criteria
1
mandatory (Security)
60 to 100+
typical controls for a startup

The five Trust Services Criteria

SOC 2 does not hand you a fixed checklist of controls. Instead it organizes everything around five categories, and you choose which apply based on the promises you make to customers.

Which criteria should you include?

Start with Security, because it is mandatory. Add the others only when you actually commit to them. If you offer an uptime SLA, include Availability. If you handle sensitive personal data, Privacy and Confidentiality may matter. Adding criteria you do not need just adds cost and evidence burden, so scope deliberately.

The controls you will actually need

Underneath the criteria, the work is concrete. Most startups end up with somewhere between 60 and 100-plus controls across a familiar set of categories.

The part teams underestimate: evidence

The single biggest reason audits slip is evidence. It is not enough for a control to exist; for a Type II report you must show it operated consistently over the observation window. That means collecting tickets, logs, review records, and approvals over months. Start evidence collection on day one, not the week before the auditor arrives.

The five Trust Services Criteria

Criterion Required? Include when
Security Yes (always) Every SOC 2. The common criteria baseline.
Availability Optional You commit to uptime or an SLA.
Processing Integrity Optional Your system transacts or processes customer data.
Confidentiality Optional You handle data customers designate confidential.
Privacy Optional You collect and process personal information.

Frequently asked

How many of the Trust Services Criteria are required?

Only one. Security, also called the common criteria, is mandatory in every SOC 2 report. The other four (Availability, Processing Integrity, Confidentiality, and Privacy) are optional and added only when they reflect commitments you make to customers.

How many controls does SOC 2 require?

There is no fixed number. SOC 2 defines criteria, not a rigid control list, so the count depends on your scope and systems. Most startups end up with roughly 60 to 100-plus controls once you account for policies, access management, encryption, logging, and change management.

What evidence does a SOC 2 auditor want?

For a Type II report, the auditor wants proof that controls operated over the whole observation window: access review records, change approvals, logs, ticket histories, and policy acknowledgements. Designing a control is not enough; you have to show it ran consistently.

Do we need all five criteria?

No, and you usually should not. Adding criteria you do not actually commit to just increases cost and evidence work. Include Security plus only the additional criteria that match what you promise customers.

What is the difference between criteria and controls?

Criteria are the high-level objectives (for example, "logical access is restricted"). Controls are the specific things you do to meet them (MFA, quarterly access reviews, offboarding within 24 hours). You map your controls to the criteria and then prove they work.

Related

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Published CVEs, including a CVSS 9.1
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Exceptions on a SOC 2 Type II built from nothing in-house

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Five published CVEs. CVE-2024-45163 (CVSS 9.1) is a flaw in the Mirai botnet itself, which gave defenders a way to shut down attacker infrastructure. CVE-2026-42626 takes HP ENVY 5000 printers offline from any unauthenticated device on the same network.

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At Humera, a venture-backed US security company, Jacob built the compliance programme in-house from nothing: no report, no policies, no documented controls. It ended in a Type II attestation with zero exceptions.

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