When we first looked at the fastest growing API categories of recent years, Financial and Payments both made the list. We've seen a number of signals that there is great interest in API related to Finance so we decided to take a deeper look at the category's growth this month.
Facebook has announced the release of the Graph API v12.0 and Marketing API v12.0. These updates include breaking changes requiring developer to update their apps. The major change is that the Graph API now supports backwards compatibility for apps that use newly created one-click access tokens.
There are a number of ways to discuss API popularity. Our metrics are based on developer engagement. The "track" functionality on ProgrammableWeb lets developers declare an interest in receiving updates on particular APIs. Which APIs and categories are seeing the most activity.