Google recently announced the Display & Video 360 API. The API supports the company’s consolidated marketing platform and was designed to provide access to asynchronous Structured Data File (SDF) download functionality. Google has announced the first significant round of updates to this API.
With huge budgets spent on marketing, it's probably a good idea to keep track of which marketing avenues are working and which aren't. Call Tracking Metrics is a simple telephone call tracking service that aims at helping users link incoming calls to specific marketing campaigns and in so doing, easily track and analyze the amount of calls received due to that particular campaign. The Call Tracking Metrics API provides access to this functionality.