I have built an application on Azure that exposes several REST endpoints. These APIs need to be called by other backend applications in my infrastructure. I want to make sure this communication is properly secured and protected from unauthorized access.
What are the recommended Azure services or features I can use to authenticate and authorize these service-to-service API calls? I’m looking for built-in Azure solutions that can handle secure backend communication without having to implement custom security from scratch.
Any suggestions on the most reliable approach for this scenario would be really helpful.
Azure AD service principals are excellent for backend service authentication. In a multi-service environment, each backend app can have its own service principal with specific API permissions. The Azure SDK streamlines token authentication, eliminating manual token management. Additionally, implementing Azure Private Link ensures that your API traffic remains within Microsoft’s network. This combination of service principals and private networking provides secure and scalable communication across various backends, with short-lived tokens that auto-refresh, enhancing security compared to static API keys.
hey sophia39! what’s ur setup like - using managed identities? they’ve worked great for my service-to-service auth. what backend services r u running? containers, functions, something else? would help figure out the best approach for u.
yep, managed identities are def the best! also, check out Azure AD app reg for better control. and make sure to use API Management for policies & throttling, plus Key Vault for keeping secrets safe. they all mesh nicely together!