Chapter 2. Iterative Evolutionary

Chapter 2. Iterative & Evolutionary

Experience is that marvelous thing that enables you to recognize a mistake when you make it again.

F. P. Jones

OVERVIEW

• Basic practices of iterative and evolutionary methods, including timeboxing and adaptive planning.

• A common mistake adopting iterative methods.

• Specific iterative and evolutionary methods, including Evo and UP.

Iterative and evolutionary development is a foundation not only of modern software methods, but as the history section of the "Evidence" chapter shows of methods used as far back as the 1960s. Agile methods are a subset of iterative and evolutionary methods. This chapter summarizes key practices:

history

iterative development	evolutionary development
risk-driven and client-driven	evolutionary requirements
timeboxing	adaptive planning