Git - Advanced

Git in Regulated/Compliance Environments

In regulated industries (finance, healthcare, defense), "who changed this code and can we prove it" isn't a nice-to-have, it's an audit requirement, and it changes which Git features move from optional to mandatory.

Signed commits (hard tier) become non-negotiable rather than a security nicety - enforced via required branch protection, with an org-wide policy on which keys are trusted and how they're rotated when someone leaves. Immutable audit trails mean force-pushes to protected branches must be disabled outright, not just discouraged, since a force-push can rewrite the very history an auditor needs to trust. Some environments require every commit traceable to an approved change ticket, enforced by a commit-msg hook validated server-side, tying the SDLC's change-management process directly into Git rather than treating them as separate systems that happen to agree.

The broader principle underneath all of this: compliance requirements turn "best practice" Git hygiene - signing, protected branches, no force-push, clean audit trails - into hard technical enforcement, because in a regulated context "we asked people nicely" is not an acceptable control.