As Wikipedia describes a 'TOM' - Target Operating Model is:
Target operating model (TOM) is a description of the desired state of the operations of a business. Typically a TOM also includes the roadmap over time that specifies what the company needs to do to move from the "as is" to the "to be".
The presentation from Boeing defines 'Using Business Architecture to Realize Your Target Operating Model', and Huawei describe the role of a meta-model.
Target Application Map
One fundamental item of this design is the technical architecture of the new IT and application environment.
In the Credit Suisse case study they define an Application Architecture Roadmap.