Microsoft uses a "Base + Attach" subscription model to keep costs down when you need multiple apps.
: Need complete access to feature-rich apps (e.g., sales reps, accountants).
: If your organization already uses Microsoft 365, admins can often purchase certain subscriptions (like Dynamics 365 Sales) directly under Billing > Purchase Services .
: Large enterprises may buy through established Microsoft Volume Licensing agreements for broader deployment. Understanding the Licensing Model
Pricing is typically per user/month and varies by region and agreement type. How to Buy Microsoft Dynamics 365 | Stoneridge Software