# Angular FE and Asp.Net Core Backend API **URL:** \ **Category:** OAuth/OIDC\ **Created:** [November 28, 2022, 8:19pm UTC](https://devforum.okta.com/t/angular-fe-and-asp-net-core-backend-api/22588 "2022-11-28T20:19:15Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![gmeena](https://avatars.discourse-cdn.com/v4/letter/g/8c91f0/32.png) [@gmeena](https://devforum.okta.com/u/gmeena)\ **Post date:** [November 28, 2022, 8:19pm UTC](https://devforum.okta.com/t/angular-fe-and-asp-net-core-backend-api/22588/1 "2022-11-28T20:19:15Z")
We are using Angular front end app and dot net core backend APIs. user authentication from angular app is working fine. but what would be the various options If we want to expose the APIs to another service and wanted to do service to service authentication. we don’t have client secret as we registered angular app as single page. Thanks ---
**Author:** ![warren](https://avatars.discourse-cdn.com/v4/letter/w/97f17d/32.png) [@warren](https://devforum.okta.com/u/warren)\ **Post date:** [November 29, 2022, 5:00pm UTC](https://devforum.okta.com/t/angular-fe-and-asp-net-core-backend-api/22588/2 "2022-11-29T17:00:18Z")
Are you referring to client credentials flow when you mentioned service to service authentication? If yes, you might want to create a separate app for it (Web). > **[Implement authorization by grant type | Okta Developer](https://developer.okta.com/docs/guides/implement-grant-type/clientcreds/main/#about-the-client-credentials-grant)** > > Secure, scalable, and highly available authentication and user management for any app. ---
**Author:** ![andrea](https://sea1.discourse-cdn.com/oktadev/user_avatar/devforum.okta.com/andrea/32/2172_2.png) [@andrea](https://devforum.okta.com/u/andrea)\ **Post date:** [February 12, 2024, 10:24pm UTC](https://devforum.okta.com/t/angular-fe-and-asp-net-core-backend-api/22588/3 "2024-02-12T22:24:45Z")
Closed on February 12, 2024, 10:24pm UTC