This is a software architecture diagram that categorizes various components of a software system into layers. The diagram is segmented into different colors and sections, each representing a layer of the software stack, such as 'Presentation', 'Service', 'Business', 'Data', and 'Frameworks'. These sections are further divided into specific components like 'User Interfaces', 'Controllers', 'Services', 'Business Components', 'Data Access Components', and so forth. This type of diagram is useful for developers and architects to understand, build, and maintain the system's structure and dependencies.