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How do I secure API access control for serverless applications?
Asked on Nov 16, 2025
Answer
Securing API access control for serverless applications involves implementing robust identity and access management (IAM) policies, API gateway configurations, and authentication mechanisms to ensure that only authorized users and services can access your APIs. This aligns with the Shared Responsibility Model, where securing the application layer is the user's responsibility.
Example Concept: Use an API Gateway to manage access control for serverless applications by implementing authentication and authorization mechanisms such as OAuth 2.0, API keys, or IAM roles. Configure the gateway to validate incoming requests, enforce rate limiting, and log access attempts. Additionally, integrate with identity providers for federated access and ensure that least privilege principles are applied to all IAM roles and policies associated with the serverless functions.
Additional Comment:
- Consider using AWS API Gateway, Azure API Management, or Google Cloud Endpoints for managing API access.
- Implement logging and monitoring to detect unauthorized access attempts and anomalies.
- Regularly review and update IAM policies to adhere to the principle of least privilege.
- Ensure that all data transmitted to and from the API is encrypted using HTTPS.
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