Select an in-store topology

This topic provides an overview of the various Dynamics 365 for Retail in-store topologies.

Choose the right Retail in store topology

Supported capabilities when connectivity is lost

Operation Without connectivity to Retail Server
(in MPOS Offline Mode)
Without connectivity to HQ
(using RSSU)
Cross terminal shifts (such as view, suspend, resume, close)
Cross terminal transactions (such as view, suspend, resume)

Supported operations when connectivity is lost

For a list of operations that are supported when the POS loses connectivity to the HQ, see Online and offline point of sale (POS) operations.

Supported deployment and maintenance capabilities

Mass deployment is supported in Modern POS, but not in Retail Store Scale Unit. For more information, see Mass deployment of Retail self-service components.

Deployed components

The following components are deployed through a single installer. This means that they do not need to be installed individually.

Modern POS

Deployed component Component type Notes
Modern POS App Universal Windows Platform (UWP) Application The Modern POS application running on the register.
Modern POS Client Broker COM Surrogate hosting native binaries for the Modern POS Hosts the Commerce Runtime to support operations to execute in offline mode as well as Async Client Libraries needed to synchronize data between the Modern POS and the HQ.
Channel Database SQL Database Register specific Channel Database instance hosting data for the register.

Retail store scale unit

Installed component Component type Notes
Retail Server IIS Web Service Scale unit specific Retail Server instance used by one or more stores.
Channel Database SQL Database Scale unit specific Store specific Channel Database instance hosting data for one or more stores.
Async Client Service Windows Service Component to synchronize master record data from the HQ to the store and transactional data from the store to the HQ.
Cloud POS IIS Web Service Cloud POS application that hosts POS functionality through a web browser.

Additional resources

MPOS offline mode

For more information about MPOS offline mode, see:

Retail store scale unit

The Retail store scale unit (RSSU) is a set of components that can be deployed in a customer environment, such as inside a store, that can support continuous operations if connectivity to the back office or headquarters (HQ) is lost.

For more information, see: