# Amazon Certificate Manager Documentation

Amazon Certificate Manager (ACM) helps you to provision, manage, and renew publicly trusted TLS certificates on Amazon based websites.

- [User Guide](/en_us/acm/latest/userguide/acm-overview.html): Provides conceptual overviews and procedures to provision, manage, and renew publicly trusted TLS certificates on Amazon based websites.
- [API Reference](/en_us/acm/latest/APIReference/Welcome.html): Describes the API operations available for ACM along with sample requests, responses, and errors.

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