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.
Attach the newest draft to its campaign review card.
Your campaign team finds the current draft on its review card, with a version note to make the handoff clear.
Create linked revision tasks for creators after review changes.
Creators get a linked revision task with review feedback, so your campaign lead can keep work moving without chasing handoffs.
Move the latest campaign draft to its review card.
Your reviewers can open the latest campaign draft on the card where they make a decision, with a note naming the version.