Compare invoices with orders, flag changed purchases. Every one is ready to run, and you can adjust it in plain language.
Your client scope changes reach the right reviewer before work moves forward, with the earlier decision linked for context.
Your approver sees the purchase order link and line differences on the bill before making a decision.
Your engineering lead sees what changed after sign-off and who needs to review it before merging continues.
Your reviewers see what changed since the last approval and get the revised order for a fresh decision.