The planning stage is arguably the most important, because what’s decided and mapped here sets the stage for the entire project. This includes client goals, target audience, detailed feature requests and as much relevant information as you can possibly gather. Even if the client has carefully planned his or her website, don’t be afraid to offer useful suggestions from your experience.
The design stage typically involves moving the information outlined in the planning stage further into reality. The main deliverables are a documented site structure and, more importantly, a visual representation. Upon completion of the design phase, the website should more or less have taken shape, but for the absence of the content and special features.
Development involves the bulk of the programming work, as well as loading content (whether by your team or the client’s). Keep code organized and commented, and refer constantly to the planning details as the full website takes shape. Take a strategic approach, and avoid future hassles by constantly testing as you go.
The purpose of the launch phase is to prepare the website for public viewing. This requires final polishing of design elements, deep testing of interactivity and features and, most of all, a consideration of the user experience. An important early step in this phase is to move the website, if need be, to its permanent Web server. Testing in the production environment is important because different servers can have different features and unexpected behavior (e.g. different database host addresses).