IT Shopkeeping

The Waterfall model has become the whipping boy of 20th century software development.  The idea that analysis, development, and testing are separate, distinct phases of a development project, where time must be allocated to each, and one must be completed before the next begins, is history.  Although it was seldom actually practiced, with time and budget constraints compressing schedules and steps, it was often an ideal to shoot for.  There was some integrity in it, as I recall.  For a long time, we regarded the model as a sign of …