In the August 2016 update of Dynamics 365 for Operations (referred to as Dynamics AX 7.0), users could pin full page Power BI reports to their workspaces. Accessing and pinning Power BI reports required you to have a PowerBI.com subscription.
From Spring (July 2017) release onwards, all user can now access Power BI reports based on Entity store, the operational data warehouse that is included with Dynamics 365 for Finance and Operations, Enterprise edition.
No Power BI licenses are required to access these reports, which are embedded in the Finance and Operations application. If a user requires access to Power BI reports and functionality outside of this embedded experience, a Power BI license must be obtained separately.