In order to be successful in the ring, a sumo wrestler needs to maintain a heavy body weight and at the same time be in peak physical condition. Just as these Japanese athletes have to find the right balance through a well thought-out combination of diet and training regimen, software development organizations need a balanced approach to implementing application architecture on agile projects.

The step between specifying requirements to working on a system design can be tricky. Fortunately, the basis on which the step is made can be calculated. Paul Reed thoroughly explains how the transition should progress and offers some instructions on how to move properly through this phase.

Every system has an architecture, even systems developed using agile methodologies. Whether you attempt to define that architecture up front in detail or whether it emerges over time is up to you. My experience is that most agile teams follow a strategy somewhere between these two extremes. That strategy, combined with proving your architectural ideas as soon as possible through working code. This article summarizes a collection of strategies for addressing architectural concerns on agile projects and discusses how such strategies can be applied to scale agile methods to large development efforts.

Powerful new development technologies such as model-based code generation will overwhelm test teams that continue to create tests by hand. It's time for testers to put their own productivity into a higher gear. Harry Robinson tells you all about it in this column.