This year I've added a dozen additional categories to cover the topics that I was writing about most frequently but didn't have any specific label for. You can read about the older categories in the original glossary . Some of these categories go with article series that haven't been published yet. I don't intend to go back through the entire history to update articles with the new categories. I will update articles as I see them though. Addressing- Articles about WS-Addressing and other ways of referring to endpoints. Behaviors- Articles about the behavior model of WCF services. Channel Dev Tour- Series of articles on building and using channels. Contracts- Articles about service and operation contracts. Faults- Articles about the SOAP model for faults and error handling. Message Security- Articles about SOAP-level security protocols. Proxies- Articles about the proxy objects generated for talking with services. Queues- Articles about MSMQ and other queuing systems. Quotas- Articles about the throttles and limits that bound service operations. Reliable Messaging- Articles about WS-ReliableMessaging and other reliable delivery guarantees. Serialization- Articles about the conversion between strongly-typed objects and messages. Service Model- Articles about one of the WCF service-level topics. Next time: ChannelFactory Contract and Generated Types Read More...