Everything you wanted to know about Application Programming Interfaces (API's): what they are, how they work, and what common problems they solve.
Everything you need to know about API (aka Application Programming Interface) Access. This article will tell you how API Authentication works and much more.
Everything you wanted to know about API analytics, including common analytics strategies, how they're used, and common providers and examples.
A concise definition of API authentication, including API keys, HMAC, OAuth, and more. Includes practical examples and code samples.