Question 1 of 30
A financial services company is developing a new API to allow third-party applications to access customer account information. The development team is considering implementing OAuth 2.0 for authentication, but they are concerned about the potential impact on user experience and API performance. What is the most effective approach to ensure both security and usability in this scenario?
Implement OAuth 2.0 with a user-friendly authorization flow and optimize token management to minimize performance overhead.
Use API keys for authentication to simplify the process and enhance performance, while relying on IP whitelisting for security.
Develop a custom authentication mechanism that combines username/password with session management to streamline user access.
Enforce strict rate limiting and logging without implementing any authentication to prioritize performance over security concerns.

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