The SharePoint Framework (SPFx) has revolutionized how developers create custom solutions for Microsoft 365. Whether you're building Web Parts, extensions, or full-fledged applications, mastering SPFx is essential for delivering modern and scalable SharePoint solutions. Authored by experienced SPFx developers, this book serves as a comprehensive guide to developing with SPFx, offering practical examples, structured guidance, and best practices. You’ll start by understanding the Microsoft SharePoint and Microsoft 365 ecosystem before exploring hands-on development with SPFx. You’ll learn how to create Web Parts, work with the property pane, connect to APIs, deploy solutions, and implement different types of extensions. Additionally, the book covers debugging, testing, and upgrading solutions efficiently. By the end of this book, you’ll be able to confidently build, deploy, and manage SharePoint solutions using SPFx while leveraging community tools and libraries to enhance development efficiency.