# Working with public parameters in Parameter Store
<a name="parameter-store-public-parameters"></a>

Some AWS services publish information about common artifacts as AWS Systems Manager *public* parameters. For example, the Amazon Elastic Compute Cloud (Amazon EC2) service publishes information about Amazon Machine Images (AMIs) as public parameters.

**Topics**
+ [Discovering public parameters in Parameter Store](parameter-store-finding-public-parameters.md)
+ [Calling AMI public parameters in Parameter Store](parameter-store-public-parameters-ami.md)
+ [Calling the ECS optimized AMI public parameter in Parameter Store](parameter-store-public-parameters-ecs.md)
+ [Calling the EKS optimized AMI public parameter in Parameter Store](parameter-store-public-parameters-eks.md)
+ [Calling public parameters for AWS services, Regions, endpoints, Availability Zones, local zones, and Wavelength Zones in Parameter Store](parameter-store-public-parameters-global-infrastructure.md)

**Related AWS blog posts**  
+ [Query for AWS Regions, Endpoints, and More Using AWS Systems Manager Parameter Store](https://aws.amazon.com/blogs/aws/new-query-for-aws-regions-endpoints-and-more-using-aws-systems-manager-parameter-store/)
+ [Query for the latest Amazon Linux AMI IDs using AWS Systems Manager Parameter Store](https://aws.amazon.com/blogs/compute/query-for-the-latest-amazon-linux-ami-ids-using-aws-systems-manager-parameter-store/)
+ [Query for the Latest Windows AMI Using AWS Systems Manager Parameter Store](https://aws.amazon.com/blogs/mt/query-for-the-latest-windows-ami-using-systems-manager-parameter-store/)