A presentation (21 sildes) that is divided into two parts. The first explains the basics about; 

► Monthly recurring revenue (“MRR”)

► Customer acquisition costs (“CAC”)

► Customer retention and churn rates

► Lifetime value of customers (“LTV”)

The second part is about issues that typically affect the above metrics, 

► Importance of gross margins

► Cancelled invoices

► Customers not using the software (or never going live)

► Deferred revenue “haircut”

source: https://www.mlrpc.com/services/due-diligence/