How to integrate Azure AD Groups to PD Users and Teams


I have integrated AAD FS to PD and now i am able to login VIA SSO.
Can I reuse the uses and groups that I created in AAD with PD ?
I see an option to create teams in PD and i am wondering if i integrate PD with my AAD, why should i create teams again in PD. why can’t i use the same groups that i created in AAD ?