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Sandbox Licenses and Storage Limits by Type
A sandbox is a copy of your organization in a separate environment that you can use for a variety of purposes, such as testing and training. Sandboxes are completely isolated from your Salesforce production organization. The operations you perform in your sandboxes don’t affect your Salesforce production organization. You can create different sandbox environments for your org, depending on your needs for storage, copy configuration, and frequency of refresh.

