Once the outside of the concept has been defined, we can start to think about the best way to realize the selected technology and platform. For web sites, the architect has general responsibility for deciding, with the developers, what page types will be needed in the CMS and what editing functions and flexible options the solution will have. This phase is about mapping the requirements and the sketches to the page types. The process is sometimes tricky. Some requirements (especially content requirements) can be met with one page type, but the design might need multiple variants of each page type.