Contexts and Dependency Injection in Java EE 6 article is online. I get many questions regarding the differences between EJB 3.X and CDI especially regarding the Contexts (the C in CDI). The EJB "vs." CDI issue became the focus of this article. Feedback, as always, is highly appreciated!
NEW 2016: Java EE 7 Workshops: Bootstrap, Effective, Architectures, April, 4th-6th, Munich's Airport
On demand workshops: Java EE 7 Bootstrap, Effective Java EE 7 and NEW: Java EE 7 Testing are available for streaming