There’s an updated (May 2014) Licensing Guide for Dynamics AX 2012 R3. As well as the updates you’d expect which cover the (slight) changes in R3 licensing, there are new sections added for:

• licensing Companion Apps
• running AX 2012 R3 on Azure
• the License Sizing Estimator tool (to estimate the configuration of different types of CALs that an organisation will need)
• licensing guidance for specific industries covering warehouse and transportation management, retail and e-commerce, and public sector.

Get the guide here: http://bit.ly/1nHIbCq.

Two new members of the Dynamics AX 2012 R3 family are added to the July 2014 Product Use Rights document: the Store Server licence and the Standard Commerce Server Core licence. If you’re curious about the scenarios where these licences are needed (and who wouldn’t be) then the Retail and eCommerce Licensing Guide from Microsoft is a good read as it covers the licensing requirements for traditional brick and mortar stores, Mobile POS, and eCommerce scenarios. Get the guide here: http://bit.ly/1oiTFgF.