TOSCA provides a metamodel that allows users to specify their service templates. For this purpose, Node Types must be defined that are referenced from Node Templates of a Topology Template. It is expected that some particular Node Types will occur frequently (like a "DBMS" Node Type, an "OperatingSystem" Node Type etc). Providing a corresponding set of Node Types by the TOSCA TC will limit the burden of using TOSCA for specifying particular service templates. This in turn will increase the likelihood for broad acceptance of TOSCA in the industry.
The issue at hand is to agree on a set of such basic Node Types and specify them using the TOSCA language. The corresponding specification should be an additional deliverable of the TOSCA TC. The set of basic Node Types should be "small", i.e. no attempt should be made to specify all Node Types needed to define most cloud applications. Instead, Node Types should be specified that are required by "typical" cloud applications today.