About this Book

This book is ambitious in scope, setting itself the aim of teaching you everything you need to do in order to transform a neglected legacy codebase into a maintainable, well-functioning piece of software that can provide value to your organization. Covering absolutely everything in a single book is, of course, an unachievable goal, but I’ve attempted to do so by approaching the problem of legacy software from a number of different angles.

Code becomes legacy (by which I mean, roughly, difficult to maintain) for a number of reasons, but most of the causes relate to humans rather than technology. If people don’t communicate enough with each other, information about the code can be lost when people leave the organization. Similarly, ...

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