# Amazon DataZone data discovery, subscription, and consumption
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In Amazon DataZone, once 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. From the Amazon DataZone portal, they choose to 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 DataZone-managed assets and those for assets that are not managed by Amazon DataZone.
+ **Managed assets** – Amazon DataZone can manage fulfillment and permissions for managed assets, such as AWS Glue tables and Amazon Redshift tables and views.
+ **Unmanaged assets** – Amazon DataZone 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 DataZone catalog](search-for-data.md)
+ [Request subscription to assets in Amazon DataZone](subscribe-to-data-assets-managed-by-datazone.md)
+ [Approve or reject a subscription request in Amazon DataZone](approve-reject-subscription-request.md)
+ [Revoke an existing subscription in Amazon DataZone](revoke-subscription.md)
+ [Cancel a subscription request in Amazon DataZone](cancel-subscription-request.md)
+ [Unsubscribe from an asset in Amazon DataZone](unsubscribe-from-subscription.md)
+ [Using existing IAM roles to fulfill Amazon DataZone subscriptions](use-your-own-role.md)
+ [Grant access to managed AWS Glue Data Catalog assets in Amazon DataZone](grant-access-to-glue-asset.md)
+ [Grant access to managed Amazon Redshift assets in Amazon DataZone](grant-access-to-redshift-asset.md)
+ [Grant access for approved subscriptions to unmanaged assets in Amazon DataZone](grant-access-to-unmanaged-asset.md)
+ [Query data in Amazon Athena or Amazon Redshift in Amazon DataZone](query-athena-with-deep-link-in-project.md)
+ [Metadata enforcement rules for subscription requests](metadata-rules.md)
+ [Analyze Amazon DataZone subscribed data with external analytics applications via JDBC connection](query-with-jdbc.md)