| Web application programming interface which is primarily used for the creation of full-blown REST a service which implies that WEB API does not NEED any data configuration and contracts to the level of WCF. | WCF was created for the development of SOAP-based services. It uses STANDARD XML and schema over HTTL which leads to the degradation in the performance of the application. |
| WEB API support Any media content format | It uses Text format that includes XML |
| It uses URL patterns, HTTP methods as a service interface | WCF uses service contract as a service interface |
| The caching mechanism of WEB API is built-in HTTP application control | The caching mechanism of WCF service is handled by the application |
