Summary of the slide deck: The slide deck introduces OPeNDAP, the Data Access Protocol (DAP), and Hyrax, an OPeNDAP-developed data server. It delineates the types of interfaces, including application software libraries and server components, and details the application-level interactions facilitated by DAP. It further explains the server architecture of Hyrax, highlighting its front-end (OLFS) and back-end (BES) components. The presentation elaborates on the components of BES and OLFS, including format handlers and dispatch handlers. Additionally, it discusses the role of OPeNDAP, DAP, and Hyrax in the context of open-source development and data access protocols. Further details are provided on DAP request processing, constraints, and responses, emphasizing the role of metadata and data objects in handling requests and building responses. Additionally, it outlines various forms of DAP responses and their potential modifications.