What is the difference between Custom Settings and Custom Metadata?

Question

Accepted Answer

Custom Settings and Custom Metadata are both used to store custom data, but have different use cases.

Custom Settings are hierarchical and can be used to store data that needs to be accessed frequently, such as organization-wide settings.
Custom Metadata is not hierarchical and can be used to store data that needs to be deployed across multiple orgs, such as picklist values.
Custom Settings can be accessed using Apex, Visualforce, and the API, while Custom Metadata can only be accessed using Apex and the API.
Custom Settings can be updated by non-admin users, while Custom Metadata can only be updated by admins.
Custom Settings have a limit of 10,000 records per org, while Custom Metadata has a limit of 2,500 records per org.

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