OKWS is a Web server, specialized for building fast and secure Web services. It provides Web developers with a small set of tools that has proved powerful enough to build complex systems with limited effort. Despite its emphasis on security, OKWS shows performance advantages relative to popular competitors: when servicing fully dynamic, non-disk-bound database workloads, OKWS's throughput and responsiveness exceed that of Apache, Flash (the reigning king of Web server performance) and Haboob (an academic system reputed to be the fastest Java Web server on the block). Commercial experience with OKWS suggests that the system can reduce hardware and system management costs, while providing security guarantees absent in current systems.