Aws api key format
If you specify a tag key that is already associated with the alarm, the new tag value that you specify replaces the previous value for that tag. You can associate as many as 50 tags with a CloudWatch resource. See also: AWS API Documentation. See 'aws help' for descriptions of global parameters.API Keys. Using API keys is a way to authenticate an application accessing the API, without referencing an actual user. The app adds the key to each API request, and the API can use the key to identify the application and authorize the request. The key can then be used to perform things like rate limiting, statistics, and similar actions.