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  3. BEMS Installation Guide
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  5. Architecture: BEMS notification flow using the Microsoft Graph API

Architecture:
BEMS
 notification flow using the
Microsoft Graph
 API

This diagram shows how
BEMS
 uses
Microsoft Graph
 to send notifications to devices when a reverse proxy is used.
BlackBerry
 recommends using a reverse proxy.
BEMS notification flow using the Microsoft Graph API
Component name
Description
BEMS
BEMS
 consolidates several
BEMS
 services used to send work data to and from
BlackBerry Dynamics
 apps, including
BlackBerry
Push Notifications
 (
BlackBerry
 Mail),
BlackBerry Connect
,
BlackBerry Presence
, and
BlackBerry
Docs
.
BEMS
 listens for notification URI sent by the
Microsoft Graph
 API.
Reverse proxy server
The reverse proxy server receives the
Microsoft Graph
 connection and proxies the connection to the private
BEMS
 URI.
Microsoft Graph
Microsoft Graph
 is a RESTful web API that allows you to communicate with
Microsoft
 Cloud service resources.
  1. BEMS
     sends a request to
    Microsoft Graph
     to subscribe to mailbox changes (for example, new email). The External Notification URL is included in the request.
  2. Microsoft Graph
     initiates a connection to your organization's reverse proxy using the External Notification URL and sends a request that includes notification details.
  3. The reverse proxy server intercepts the
    Microsoft Graph
     connection request and translates/routes the request to your
    BEMS
     cluster or instance.
  4. BEMS
     receives the request from the reverse proxy and sends the new notification (for example, new email) to
    BlackBerry Work
     based on the notification rules and the user's device settings.