You are tasked with designing an API that will be accessed by various clients. How would you decide whether to use API keys or an alternative form of authentication?

  • Always use API keys as they are the most secure form of authentication.
  • Evaluate the specific use case and security requirements before choosing an authentication method.
  • Use client certificates exclusively for authentication.
  • Use OAuth 2.0 for all authentication scenarios.
The correct approach is to evaluate the specific use case and security requirements when deciding on the authentication method. API keys are a valid option in some scenarios, but other methods like OAuth 2.0 or client certificates may be more suitable based on the context and security needs of the API and clients. There is no one-size-fits-all answer.
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