Google Drive is Google's file sync app that lets you store all of your files online alongside your Google Docs documents, and keep them synced with all of your devices.
Your review card shows when feedback names an older PDF. You can resolve the mismatch while the card stays in review.
Your reviewer gets the current image or PDF and a clear question. Your review card shows which revision you sent.
Your maker sees linked PDF marks and the next proof deadline in chat. Your approval task keeps the same fixes.
Your review tasks show the current image revision and reviewer due date, so the next handoff is clear.
See whether your client has access to the current proof before the review moves forward, with the answer on the task.
Your maker gets the fixes in the review task, tied to the PDF version your reviewer marked up.