In this post, I would be only talking about Generally available (GA) features, excluding pilots and Beta. Saving those awesome features for suitable time to come. So, here are some of my favorite picks from Spring 17.
Imagine we are doing REST API call from external system by creating Account first and then contact. In between if internet connection is gone or user closes browser and only Account created without contact ? From Spring 17, we can reduce number of REST API calls made by combining them in single request. Advantage of this feature would be easier transaction management and API limit saving. You can have up to 25 subrequests in a single call. Up to 10 of these subrequests can be query operations, including Query, QueryAll, and “Query More” requests to obtain the next batch of query results.