Introduction As enterprises embark on their digital transformation journey, they define the vision, road map, and objectives of the digital transformation programs. Digital transformation involves legacy modernization, reimagining digital experiences, implementing cloud- first and mobile-first models. Such digital transformation involves various challenges and risk factors including but not limited to niche technology stack, unavailability of skilled resources, long time to market, and such. Enterprises need to carefully evaluate technology trends and future outlook, and invest in the technology stack that caters to their current digital transformation goals as well as their long-term digital vision. Digital experience platforms (DXPs) are an integrated set of technologies and tools that provide best-of-breed modern digital technologies for enterprises. A DXP has a preintegrated set of technology stacks that addresses the risk related to a niche/ unproven technology stack and risky integrations. DXPs are designed on the platform philosophy so that they can be easily extended and scaled to meet future demands of scalability and onboard new innovations. A DXP is one of the most popular approaches for building an enterprise grade digital platform. A DXP provides a set of capabilities to quickly develop a personalized, secure, and scalable enterprise platform. DXPs are designed in such a way that they can incorporate modern digital technology to build next-generation enterprise applications. You can develop your own digital experience platform. The book looks at various open-source tools, technology, and frameworks that can be used for building DXPs. This book covers core concepts to build enterprise grade DXPs. Readers get a holistic view to build DXPs and will be able to transform existing applications to a DXP that is capable of incorporating emerging technologies in near future. DXPs are not just limited to a few commercial products. Enterprises can build their own experience platforms to meet their needs. This book discusses the methods and technology frameworks across various layers to design a DXP. We divided this book into five parts: requirements and design, development, security, infrastructure/NFR, and a case study to cover end-to-end DXP lifecycle scenarios. We discuss proven best practices, design methods, and technology frameworks along with contextual real-world case studies for each of the chapters. xxiii