This guide outlines the integration capabilities of Liferay, focusing on how to create unified digital experiences by connecting various systems, applications, and data. It describes the importance of removing data silos and presents multiple approaches to connect to Liferay DXP via web APIs, including Headless REST APIs, GraphQL API, and Plain Web/REST Services. The document details how to integrate back-end systems, enabling users to import and export data seamlessly between Liferay and external systems such as MySQL, SAP, and Salesforce. It explains the use of Proxy Objects for data retrieval and storage, helping to reduce inconsistencies. Additionally, the guide lists pre-built connectors for popular systems and highlights the use of Client Extensions for customization without modifying the core platform. It emphasizes the role of headless APIs in delivering diverse front-end experiences and the availability of solutions through Liferay Marketplace.