Internal Developer Platforms (IDPs) are robust systems designed to facilitate and streamline the development process while empowering developers with self-service capabilities. IDPs integrate various technologies and tools, integrating workflows for optimal efficiency, and reducing cognitive load on developers. They are built by Operations teams and cater specifically to application developers' needs, offering autonomy in modifying configurations, deploying applications, creating environments, and reverting changes. IDPs typically consist of five critical components: developer portals, service catalogs, user interfaces, APIs, and command-line interfaces. These platforms leverage existing technologies and tools, often integrating with Kubernetes, CI setups, and external resources like databases and DNS. The name "Internal Developer Platform" distinguishes these platforms from externally facing platforms. IDPs exert a significant positive influence on development teams' velocity and satisfaction, reducing manual labor, lowering costs, and driving standardization towards a more sustainable and scalable environment. However, implementing an IDP can introduce complexity and a learning curve, require careful integration with existing processes and tools, and depend on the platform team for management and maintenance. An IDP is typically justified in teams with microservice architectures, large development teams supported by dedicated DevOps personnel, or organizations requiring multi-cloud deployment capabilities.