BEST (Business / Enterprise State Transfer) is an architectural approach for exchanging content with a Web site or Web services and is similar to REST or SOAP.
GraphQL is a data query language developed and released by Facebook to create APIs and a runtime for executing queries with existing data.
REST (REpresentational State Transfer) is an architectural style for developing web services. REST is popular due to its simplicity and the fact that it builds upon existing systems and features of the internet's HTTP in order to achieve its objectives, as opposed to creating new standards, frameworks and technologies.
WebDAV (World Wide Web Distributed Authoring and Versioning) is the Internet Engineering Task Force (IETF) standard for collaborative authoring on the Web: a set of extensions to the Hypertext Transfer Protocol (HTTP) that facilitates collaborative editing and file management between users located remotely from each other on the Internet.