SCENARIO 3: E-COMMERCE
Microsoft Dynamics e-commerce is a joint solution between Microsoft SharePoint and Microsoft Dynamics delivering the industry’s first e-commerce/web store front solution natively integrated to a single solution that manages all the critical execution and fulfillment processes including – omni-channel management for supply chain, catalog and merchandising, order fulfillment, shipping, payment, shopping cart and more. This solution can run as a standalone offer for your organization or be deployed as part of a complete end to end retail solution that also includes integrated POS, store management, ERP and more.
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Store devices and employees accessing the Microsoft Dynamics AX 2012 R3 solution functionality require CALs as defined in the Microsoft Dynamics AX 2012 R3 Product Use Rights (PUR).
External users (customers)
do not require CALs.

External user definition:
The customer or customer affiliates’ employees, agents, or contractors require a CAL to access the Microsoft Dynamics AX 2012 solution. End customers (customers of the Microsoft Dynamics AX customer) do not require a CAL to access the Microsoft Dynamics AX 2012 solution to manage their accounts and orders. However, end customers may not use the software to manage any portions of their business.
Notwithstanding the foregoing, CALs are required for access through Microsoft Dynamics AX 2012 clients.