Web services are software systems that use standardized protocols and formats, such as XML and HTTP, to exchange data and messages between different applications or systems over the Internet or other networks12. Web services enable interoperability and integration among diverse software components, regardless of their programming languages, platforms, or architectures34.
Reference = 1: What are Web Services? - GeeksforGeeks 2: Web service - Wikipedia 3: What are Web Services? - Online Tutorials Library 4: What is a Web Service? | Webopedia