Should you build or buy Communications Archiving & Compliance?
Communications archiving software captures, preserves, and makes retrievable every regulated business communication (email, chat, voice, and social media) under SEC, FINRA, and similar rules, so a regulated firm can produce records on request and enforce legal holds. Buyers are compliance teams at broker-dealers and other regulated financial firms.
Buy. The SEC and FINRA rules require compliant capture, preservation and production, not a named vendor, and S3 Object Lock is an assessed WORM component, but the firm still owns evidence that it captured every in-scope channel, applied holds and retention correctly, and can produce records on demand. Nobody has published a self-built archive that carries that burden in production at a regulated firm, and per-user vendor pricing is modest relative to the compliance risk, so buy the archive and negotiate channel scope, retention growth and exit terms.
Build it, buy it, or bridge?
When building makes sense
There's essentially no build case here, and this page functions as a risk statement more than a comparison. SEC Rule 17a-4, as amended in 2022, allows WORM or audit-trail preservation and even lets a designated executive officer replace the old third-party undertaking requirement, so the rules genuinely don't name a required vendor. Amazon documents S3 Object Lock with a Cohasset assessment covering 17a-4(f), so the storage layer's compliance can be self-managed. But storage is the easy fraction of this problem. The rules require you to capture every in-scope channel, apply legal holds and retention correctly across all of them, and produce records on demand under FINRA's books-and-records rules and MiFID II's multi-year retention requirements, and no regulated firm has published a self-built system doing that in production. Public examples of in-house archiving are built around commercial or vendor-derived infrastructure.
When buying makes sense
Buying is the clear call. Per-user vendor pricing is modest against the compliance risk it's insuring, running in the range of a few dollars to several tens of dollars per user monthly depending on channel coverage and supervision depth. Pick the archive that covers what you actually need to archive (email, chat platforms, voice, social media) and whose supervision tooling and export terms fit your regulatory scope, since SEC and FINRA rules require compliant capture and production but don't name a specific product. Negotiate channel scope, retention growth pricing, and exit terms explicitly, because your archive is where years of discoverable business records live, and switching providers later is expensive in a way switching most software isn't.
The desk read
Build-versus-buy analysis for Communications Archiving & Compliance is being written. In the meantime, the framework that drives every B4 call is on the B4 Index page.
Frequently asked
Do SEC rules require a specific archiving vendor?
No. SEC Rule 17a-4 as amended in 2022 allows WORM or audit-trail preservation and doesn't name a product. But your firm still owns the burden of proving it captured every in-scope channel and applied retention correctly, and no regulated firm has published a self-built system doing that in production.
Can we just use S3 Object Lock instead of buying an archive?
Object-lock storage can satisfy the storage-immutability piece of 17a-4(f), and Amazon documents an assessment covering that. It doesn't solve capture across every regulated channel, legal-hold application, or on-demand production, which is the harder and larger part of the compliance obligation.
What are the main communications archiving vendors?
Representative vendors include Global Relay Archive, Mimecast Cloud Archive. B4 Pro includes the category score and the full vendor list.