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.
Share the exact report revision and record who received it.
Your reviewers get a link to the right report revision, and you see who can open it and where delivery needs attention.
File new project documents and flag uncertain matches.
Your synced work folder stays tidy as new files reach matching subfolders. A dated report shows which files need your decision.