Reindexing all indexes every time is inefficient. Magento 2 allows you to reindex specific indexes to save time and server resources. Here are the two ways to do it:

Via CLI (Default Method):

For example:

Via Admin Panel (Recommended):

With the Magento 2 Backend Reindex from Admin Panel Extension:

1. Go to System → Index Management.
2. Check only the specific index you need to reindex (e.g., Catalog Search, Product Price, or Inventory).
3. Click Reindex — only the selected index is processed.

This targeted approach is faster, reduces server load, and gives admins precise control - making the Magento 2 Reindex Extension the smarter choice for busy stores that update data frequently.