InTroduCTIon In the requirements and design part, we introduce various concepts of DXPs and elaborate on requirements elaboration methods. We also provide an in-depth discussion of various design elements of DXPs such as UI design, integration design, and such. The chapters in this part cover the requirement gathering phases, functional requirements, and sample use case to develop your own DXP application; user experience requirements to develop your own user interface and mobility requirements to develop your own mobile experience; nonfunctional, social and collaboration, security, infrastructure, disaster recovery, and rollout requirements to develop your own digital experiences platform. This is the first step to develop and analyze the requirements to build an enterprise DXP. The design chapter covers the patterns and architectural strategy along with various layers of the DXP. This chapter also briefly discusses the integration of various emerging technologies such as IoT integration design, Blockchain design, big data, and NoSQL design, and AI automation design along with chatbot case studies, enterprise search engine capabilities, and introduction of augmented reality with DXP applications, along with recent trends in CICD (continuous integration and continuous deployment) using application containerization technique. The development part mainly discusses the detailed design and development of DXP layers such as the user interface layer and integration layer. The chapters in this part cover each and every aspect of developing the user interface using open-source web frameworks, modular UI components and key features, integration of UI components using open source ESB and integration frameworks, UI development lifecycle and best practices, along with a BXP (Banking experience platform) case study. In the security part, we provide an elaborate discussion of information security and overall security of DXPs. The chapters in this part cover the concepts and best practices while developing an application’s security, along with information security policy and principles. The infrastructure/NFR part discusses various quality and nonfunctional attributes such as performance, infrastructure sizing, and such. The chapters in this part cover the NFR(nonfunctional requirements), that is, scalability, availability, performance, modularity, extensibility, and security of the DXP’s application along with quality attributes such as usability, configurability, stability, interoperability, efficiency, flexibility, and maintainability of the platform. Finally, we wrap up with an elaborate digital transformation case study of a legacy system in the last chapter. The case study chapter provides insights into the digital transformation of a legacy application to a Digital experience platform. It covers concepts xxiv