What are API keys and application keys in Datadog?

An API key identifies your Datadog organization and authorizes data to be submitted to it - it's what the Agent and integrations use to send metrics, traces, and logs in.

An application key, by contrast, is tied to an individual user and their permissions, and is used alongside an API key to authenticate programmatic actions taken on behalf of that user, such as creating a dashboard or querying data via the API.

In short: the API key gets data in, while the application key controls what a specific user or script is allowed to do once talking to the API.

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