A SOC 3 report is the public-facing member of the System and Organization Controls family. Where a SOC 2 is a detailed, restricted-use report shared under NDA, a SOC 3 is a short, general-use summary you can publish openly. For companies that want a visible trust signal without exposing sensitive detail, it is a valuable complement to a SOC 2.
This guide explains what a SOC 3 contains, how it differs from a SOC 2, when it is worth producing, and how it fits into a broader trust and marketing strategy.
What a SOC 3 actually is
A SOC 3 is an attestation report, issued by the same licensed CPA firm and based on the same examination as your SOC 2, but written for a general audience. It confirms that an independent auditor examined your controls against the Trust Services Criteria and reached an opinion, without disclosing the detailed system description or the specific control tests and results that make a SOC 2 sensitive. Because it carries no confidential detail, you can hand it to anyone or post it publicly.
What a SOC 3 contains
A SOC 3 is deliberately concise. It includes the independent auditor's opinion, management's assertion, and a short, high-level description of the system and the boundaries of the examination. What it omits is just as important: the granular system description, the list of individual controls, and the test procedures and results. That omission is the entire point - it lets you demonstrate that you hold a SOC 2-level examination without revealing the internal detail competitors or attackers could misuse.
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How a SOC 3 differs from a SOC 2
The cleanest way to understand a SOC 3 is by contrast with a SOC 2. A SOC 2 is detailed and restricted-use, intended for your customers' security and procurement teams under NDA; it can run to dozens or hundreds of pages. A SOC 3 is summarized and general-use, intended for anyone, and is typically only a few pages. Both attest to the same underlying controls and Trust Services Criteria - the difference is audience and depth, not rigor. A SOC 3 is not a lighter audit; it is a lighter document derived from the same audit.
When a SOC 3 is worth producing
Produce a SOC 3 when you want a trust asset you can use freely: a downloadable PDF on your security or trust page, a link in sales decks, or a document to share with a prospect early in a conversation before NDAs are in place. Because it is generated from the SOC 2 examination you are already paying for, the incremental cost is small, which makes it an easy addition for any company that does meaningful public-facing marketing or self-serve sales.
What a SOC 3 is not
A SOC 3 is not a substitute for a SOC 2 in serious vendor due diligence. Enterprise security teams will still ask for the full SOC 2 report under NDA, because they need to see the system description, the controls, and the test results to complete their review. Treat the SOC 3 as the public headline and the SOC 2 as the detailed evidence behind it; offering only a SOC 3 to a customer who has asked for a SOC 2 will not satisfy the request.
Type 1, Type 2, and SOC 3
Because a SOC 3 summarizes a SOC 2, its strength depends on the SOC 2 behind it. A SOC 3 built on a Type 2 examination carries far more weight than one built on a Type 1, because it reflects controls that operated over a period rather than a point-in-time design check. Most companies that publish a SOC 3 base it on their annual Type 2, so the public summary always reflects current, operating assurance. Knowing how SOC 3 differs helps you position your SOC 2 compliance publicly.
How to use a SOC 3 in your trust strategy
A SOC 3 works best as the public layer of a tiered trust strategy. On your website or trust center, you publish the SOC 3 as proof that an independent examination took place; when a prospect's security team engages, you provide the full SOC 2 under NDA. Pairing the two lets you market your security posture openly while protecting the sensitive detail, and it shortens early sales conversations because a prospect can verify your standing before any paperwork.
Keeping a SOC 3 current
A SOC 3 reflects the period of the SOC 2 it is drawn from, so it should be refreshed each time you complete a new annual examination. Publishing a SOC 3 that is more than a year old undercuts its purpose, since visitors reasonably expect a current document. Tie SOC 3 issuance to your annual Type 2 so the public summary is always as fresh as the underlying report.
SOC 3 and your trust center
A SOC 3 is the natural centerpiece of a public trust center. Many companies now maintain a dedicated trust or security page where prospects can self-serve basic assurance, and a downloadable SOC 3 is exactly the kind of artifact that belongs there - it proves an independent examination occurred without exposing anything sensitive. Pairing the SOC 3 with a clear note that the full SOC 2 is available under NDA gives visitors a complete picture and signals maturity before a sales conversation even begins.
Who reads a SOC 3
The audience for a SOC 3 is broader than for a SOC 2. Where the SOC 2 is read by a prospect's security and procurement teams during formal due diligence, the SOC 3 is read by anyone evaluating you earlier and more casually - a buyer doing initial research, a partner assessing fit, or a smaller customer whose process does not demand the full report. Because it requires no NDA, it removes friction from these early, high-volume interactions.
How a SOC 3 fits alongside other assurances
A SOC 3 sits comfortably next to other public trust signals such as an ISO 27001 certificate or a list of frameworks you support. Because all of these draw on overlapping controls, presenting them together tells a coherent story: independent attestation through SOC 2 and SOC 3, certification through ISO 27001, and whatever sector-specific assurances your market expects. The SOC 3 is the piece that makes your SOC 2 standing visible without compromising it.
Using SOC 2 and SOC 3 together
The strongest approach is to treat the two reports as a pair rather than alternatives. The SOC 3 is your public proof that an independent examination took place, posted openly to build trust at scale; the SOC 2 is the detailed report you provide under NDA when a buyer's security team needs to verify the specifics. Because both come from the same annual examination, maintaining the pair costs little extra and ensures that whatever level of detail a given audience needs, you have a document ready for them.
How ISpectra helps with SOC 3
ISpectra arranges your SOC 2 examination and coordinates the SOC 3 summary from the same engagement, so you walk away with both the detailed report your buyers review under NDA and the public document you can post immediately - delivered on the same accelerated timeline, with a Type 2 within four months.
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