Can Application Services have more than one Technical Service Offering?

[Erick18]

On the Application Service page, at the bottom there is a list collector for Business Applications, Technical Service Offerings, Business Service Offerings, and Parent Application Service? 

Can each of these areas specifically technical service offerings contain more than one value? What are the relationship rules 1 to 1 or 1 to many?

[cassieb_]

Yes, and application service can have more than one technical service offering, it is a 1 to many relationship with Business Applications, Business Service Offerings and Parent Application Services.

An application service should be related to at least one of the above.

[Erick18]

Would you be able to provide an example where more than one technical service offering would be related directly to an application service? 

[mcastoe]

Application Services, according to CSDM definition,  represent the "deployment of a Business Application".  If you consider that definition, an Application Service will have one and only one Business Application so despite the CSDM App Service Wizard allowing multiple, you should not.  As for Technical Service Offerings, the implication according to CSDM is that the Service Offering "Contains" the Application Service and therefore you would have only one Technical Service Offering Containing an Application Service.   Business Service Offerings may depend upon many App Services and a single App Service may be "Used By" many Business Service Offerings.   

Application Services do not, by CSDM, have Service Offerings.

https://www.servicenow.com/community/common-service-data-model/it-is-time-csdm-4-0-draft-white-paper...

See the CSDM white paper for definitions and description of how these entities interplay.

[CMDB Whisperer]

I disagree here.  If you base the answer off the "Contains" language I can see that logic.  However, this is where I believe the CSDM fails to apply consistent logic and the semantics should be changed.  A Technical Service, broadly, describes outcomes that are delivered to technology consumers.  A Technical Service Offerings defined for a Technical Service are determined based on one or more factors including different Service Commitments, different Technology factors, or even different Scope.  While some cases will certainly have a 1:1 relationship between a Technical Service Offering and an Application Service, some Technical Service Offerings may have dependencies on more than one Application Service, and some Application Services may be used by more than one similar Technical Service Offerings.  I think the term "Contains" here is too restrictive to allow for the different use case scenarios involved in defining your Technical Service Portfolio, and should be changed to a different relationship type and should be clarified in CSDM 5.0.