Which of the following technologies are related to Web services?

IDM (Identity Management) is a system for managing digital identities and access, not a technology directly used for defining or exchanging data in web services.

IDM (Identity Management) is a system for managing digital identities and access, not a technology directly used for defining or exchanging data in web services.

HTML is the foundational language for creating web content that web services often interact with, JSON is a popular lightweight data interchange format, and XML is a widely used markup language for structuring data. These three technologies are extensively employed in building and interacting with various types of web services for content rendering, data serialization, and structured messaging.

DM (Data Management or Document Management) is a broad term and not a specific technology related to web service data exchange or definition.