Hi @durga valliammai ,
An application programming interface (API) is an interface that defines interactions between multiple software applications or mixed hardware-software intermediaries.
- Reference to Web APIs is currently the most common use of the term.
If you need a Web Service and don’t need SOAP, then ASP.NET Web API is best choice.Based on HTTP, it is easy to define, expose and use in a REST-ful way.
You can click this link to learn ASP.NET Web API.
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Best Regards,
YihuiSun