Published onAfter many years working in your system, building, tinkering, improving, breaking and reassembling, you decide that what is really needed is a full software rewrite. After all, what can go wrong? If you were ever involved in a full rewrite project, you know the answer. Absolutely everything can go wrong. Why you think you want it There’s plenty of reasons for developers to advocate for a full software rewrite, but the most common is the software complexity and cost of maintenance.