What is the default store ID for the admin panel?

In Magento, the default store ID for the admin panel is 0. This is used as a fallback mechanism where,

if the current store view's ID is not 0, Magento automatically adds 0 as a fallback. This ensures that

the admin panel has a unique identifier, differentiating it from the frontend store views, which

typically start with IDs higher than 0. This setup is crucial for Magento's multi-store architecture,

allowing for distinct configurations and behaviors between the admin and frontend contexts​​.