Amazon Key Management Service (KMS)

Easily create and control the keys used to encrypt your data

KMS Free Tier includes 20,000 free requests per month.

Amazon Web Services China Region • Always Free

Amazon Key Management Service (KMS) makes it easy for you to create and manage encryption keys. You define permissions that control the use of your keys to access encrypted data across a wide range of Amazon services and in your own applications. Amazon KMS is a secure and resilient service that uses hardware security modules to protect your keys. Amazon KMS is integrated with Amazon CloudTrail to provide you with logs of all key usage to help meet your regulatory and compliance needs.


Fully managed

Avoid the need to build secure systems and to manage complex processes to protect your keys. KMS handles the full lifecycle of your keys so you can easily create, rotate, delete, and manage permissions on keys from the Amazon Web Services Management Console or by using the Amazon SDK or CLI.

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Simplify encryption across Amazon Web Services

Expand your use of encryption to protect your data. Amazon KMS is integrated with Amazon Web Services services to provide a control point to define and enforce access controls consistently across compute instances, databases, storage environments and tools such as data analytics and machine learning.

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Easily deploy encryption yourself

Avoid risk and complexity as you build encryption into your own systems. Using simple APIs you can use Amazon KMS as a centralized data encryption service. You can also build encryption capabilities directly into your applications using the Amazon Web Services Encryption SDK and manage your keys through its integration with Amazon KMS.

Confidence that your keys are secure

Amazon manages the security controls required to protect your keys from unauthorized physical access. You manage the access policies and lifecycle of keys to protect them from unauthorized logical access. Your keys are protected by government-approved hardware security modules (HSMs). Once created, your master keys can only be used inside the government-approved HSMs. There are no mechanisms for anyone, including service operators, to export or view your keys.

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Verify your keys are used correctly

Amazon KMS is integrated with Amazon CloudTrail to record all API requests. You can track and verify all attempts to use or manage your keys including encrypt and decrypt operations and changes that modify permissions. Logging API requests helps you manage risk, meet compliance requirements, and conduct forensic analysis.

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Easy to get started

There is no commitment and no upfront charges to use Amazon KMS. You are only charged when you use or manage your keys and you only pay to store keys that you create.

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Check out the product features

Read about Amazon Key Management Service security, compliance, and availability.

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Sign up for a free account

Instantly get access to the Amazon Free Tier. 

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Start building in the console

Get started building with Amazon Key Management Service in the Amazon Console.

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