What is a realistic way to manage AD users in Okta?

We are planning to integrate Okta with Active Directory (AD), and we are considering managing AD users from the Okta side.

Our AD environment contains more than 50 OUs, organized by department and project, with users assigned to each OU.

In this kind of setup, is it standard practice to create corresponding groups in Okta for each AD OU and manage users by assigning the AD directories to those groups?

My concern is that creating and maintaining more than 50 OU-related groups in Okta does not seem like a very efficient or scalable approach.

If there are more practical methods or recommended design/operational patterns, I would greatly appreciate your advice.