# Data discovery, subscription, and consumption
<a name="discover-data"></a>

In Amazon SageMaker Unified Studio, after an asset is published to a domain, subscribers can discover and request a subscription to this asset. The subscription process begins with a subscriber searching for and browsing the catalog to find an asset they want. In the Amazon SageMaker Catalog, they subscribe to the asset by submitting a subscription request that includes justification and the reason for the request. The owner of the asset reviews the request. They can either approve or reject the request. 

After a subscription is granted, a fulfillment process starts to facilitate access to the asset for the subscriber. There are two primary modes of asset access control and fulfillment: those for Amazon SageMaker Unified Studio managed assets and those for assets that are not managed by Amazon SageMaker Unified Studio.
+ **Managed assets** – Amazon SageMaker Unified Studio can manage fulfillment and permissions for managed assets, such as AWS Glue tables and Amazon Redshift tables and views.
+ **Unmanaged assets** – Amazon SageMaker Unified Studio publishes standard events related to your actions (for example, approval given to a subscription request to Amazon EventBridge). You can use these standard events to integrate with other AWS services or third-party solutions for custom integrations.

**Topics**
+ [Search for and view assets in the Amazon SageMaker Unified Studio catalog](search-for-data.md)
+ [Request subscription to assets in Amazon SageMaker Unified Studio](subscribe-to-data-assets-managed.md)
+ [Approve or reject a subscription request in Amazon SageMaker Unified Studio](approve-reject-subscription-request.md)
+ [Revoke an existing subscription in Amazon SageMaker Unified Studio](revoke-subscription.md)
+ [Cancel a subscription request in Amazon SageMaker Unified Studio](cancel-subscription-request.md)
+ [Unsubscribe from an asset in Amazon SageMaker Unified Studio](unsubscribe-from-subscription.md)
+ [Grant access to managed AWS Glue Data Catalog assets in Amazon SageMaker Unified Studio](grant-access-to-glue-asset.md)
+ [Grant access to managed Amazon Redshift assets in Amazon SageMaker Unified Studio](grant-access-to-redshift-asset.md)
+ [Grant access for approved subscriptions to unmanaged assets in Amazon SageMaker Unified Studio](grant-access-to-unmanaged-asset.md)
+ [Metadata enforcement rules for subscription requests](metadata-rules-subscription.md)