Google adds a new feature to AdWords whereby advertisers can now set up a schedule for offline conversion uploads. This schedule can be set for daily or weekly.
The schedules can be set up with https, FTP, and Google sheet. It means advertisers can now create a file with updates on a https URL and give this URL to Google. On the scheduled frequency, Google will automatically be crawling the file and will be making the necessary updates to the offline conversion data. Alternatively, it can also be setup with Google Sheet or a URL that is behind a user ID and password. The later scenario will need FTP user ID and password.