There are a number of architectural principles that underlie the development of the World Wide Web. Some of these are well-known; others are less well-known or accepted. It is important for the growth and interoperability of the Web that these principles be documented and generally agreed to. The W3C created its Technical Architecture Group (TAG) in 2001 to document and build consensus around principles of Web architecture and to interpret and clarify these principles when necessary, to resolve issues involving general Web architecture brought to the TAG, and to help coordinate cross-technology architecture developments inside and outside W3C.

This talk will introduce the audience to the W3C TAG's "Architectural Principles of the World Wide Web" which was published as a Last Call specification in Dec 2003. In addition the talk will outline the architectural issues that the TAG intends to tackle in future versions of the WebArch document.