login to O365 with LDAP or azure

hi, 

I'm going to be integrating an association (non profit) as IT manager.

At the moment they are running an open source email server and LDAP to center the login to the different services (only web based eg: wordpress)

I would like to transfer the email server to O365 and the LDAP to azure and also launch teams and OneDrive.

after doing some digging i've this :

https://azure.microsoft.com/en-us/pricing/details/active-directory/

and this

https://www.microsoft.com/en-us/nonprofits/azure

what i'm looking to do with azure is certalize the login, add 2FA, add reuse the SSO part to enable user to login to the other sites (like wordpress as said above)

i'm currently planning on using the non-profitE1 offer

https://products.office.com/en/nonprofit/office-365-nonprofit-plans-and-pricing?tab=2

so my questions are :

can we link the non-profit E1 offer and exchange (or is it included in the E1 offer) ?

would using azure for all that i said above (login, SSO, 2FA) still be free ?

were can i find a tutorial for using azure's SSO with php and with python ?

can i use azure as a link to my LDAP ?