It's a map before a build, not a sales pitch.
A proper architecture audit produces a workflow map, an integration and data assessment, and a prioritised delivery plan, agreed and paid for as its own deliverable, not a disguised way to sell you a larger project.
It earns its cost when the stakes are high.
If a wrong architectural decision would be expensive to unwind, multiple systems that need to connect, sensitive data, a large user base, the audit's cost is small relative to what a wrong build would cost later.
It's overkill for a single, well-understood project.
A straightforward website rebuild or a single automation with one clear owner usually doesn't need a separate audit phase. Scoping happens naturally in the first proposal conversation.
What a good one actually delivers.
A clear priority order, an honest view of integration risk, and a delivery plan you could hand to a different team entirely and still act on. If an audit only produces a recommendation to hire the same firm, it hasn't done its job.
Bring your workflow, your constraints, and the outcome you want to achieve.