API usage is extremely common now. APIs are access points to an application that offer developers flexibility in the way they communicate with them, dramatically increasing their efficiency.
APIs use different authentication services, depending on where the API calls come from and the resource(s) they are requesting:
- API keys: These are encrypted strings that can be used when API calls don't need to access user data. These are great for getting developers up and running quickly. Keys are created from the GCP console under API | Services | Credentials ...