(This book describes the career planning of programmers - how to plan their career, how to develop their career in the direction they choose, and how to achieve their career goals step by step along the road of building and selling their products. This book is divided into five chapters, covering how to choose the technical and business fields of career development, what technologies should be available in today's fast-paced economy, how to create value for the company and how to sell yourself.This book is suitable for software developers from all walks of life.)