SharePoint 2013 is fully embracing the world of client-side technologies, both on-premises and in the cloud. Regardless of which programming language you use (C#, VB.NET or JavaScript) a fundamental decision you must make is which API you will use to reach back into SharePoint - REST or CSOM? This session will briefly introduce each API, and then quickly move into a demo-heavy comparison of both approaches, citing the pros and cons of each. By the end of the session, you will have a solid understanding of when and why you would use one API over the other (regardless of programming language) as well as plenty of examples of each in action.