Abstract. We evaluate the efficacy of an established OO/CBD development process (OPEN) in web development and propose new and amended Activities, Tasks, Techniques and Roles that should be included in OPEN in order to fully support the new demands of website construction and the delivery of business value on the web. Sixteen new Tasks are identified together with one new Activity. Four subtasks of particular relevance to the interface based on Usage Centered Design are also advocated. Seven Techniques and ten Roles (some modified rather than new) are also added to the OPEN repository and some example tailoring matrices introduced as examples of process instantiation and tailoring for B2C and B2B.