# Amazon GuardDuty

Amazon GuardDuty is a continuous security monitoring service. Amazon GuardDuty can help to identify unexpected and potentially unauthorized or malicious activity in your Amazon environment.

- [User Guide](/en_us/guardduty/latest/ug/what-is-guardduty.html): Walks through how to set up Amazon GuardDuty and evaluate the security of your Amazon environment.
- [API Reference](/en_us/guardduty/latest/APIReference/Welcome.html): Describes all of the API operations for Amazon GuardDuty.

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