I've recently made the move from in-house UX designer to working at an agency. While working in house, a big part of my job was defining success metrics, measuring for success, and iterating. Most of the work we get through the agency is very interesting enterprise application design, but we are almost always asked to come on-board, work on a project for a couple of months, then hand it off. There is no plan to engage the client in the long-term, we just design a ship and wish them luck.
It seems to me that we (us and the client) are missing crucial steps in the process; the ongoing analysis, testing, and iteration. Does anybody have any experience with building these steps into the design process from an agency perspective? Sharing your experience pointing to any relevant resources would be very much appreciated.