Questions about laying out CSDM Layers

[aliceal]

We are attempting to migrate our data into the OOB CSDM and I'm getting stumped on how to proceed.

We have two possible layouts in our environment that I'm attempting to address.

Situation 1 seems to be fairly straightforward, but I wanted to get confirmation I'm looking at this the right way.

We have Business Application AppX

From there, we put in additional Business Application Layers as children called AppXUI, AppXDB, AppXWeb

From there, we add the Application Service AppXUI-Prod, AppXUI-Dev, etc.

For situation 1, am I going about it the right way?

Now situation 2, is a little more muddy.
I want the same layout, however, I also want to be able to see everything under a specific Customer.
How would I address having Business Application AppY, but making sure I also can see ContosoAppYUI, ContosoAppYDB (and their environments) without making duplicate entries of AppYUI-Prod, AppYUI-Dev for every customer that has their own environment?

Is this possible or am I completely off in how I'm looking at this?

[HMJ]

No the approach 1 would be 

BusinessApp AppX

   ApplicationService AppX-Prod

   ApplicationService AppX-Dev

You then use one of the Servicemapping Methods to assign  AppXUI, AppXDB, AppXWeb to your corresponding Application Service

Customers would use ServiceOfferings, not BusinessApplication and you assign the Application Service to the right ServiceOffering (that has the customer also assigned to it).

For Scenario 1 there is a lot of good examples available from ServiceNow in CSDM Examples

[aliceal]

Thank you for the response. For your reply, I'm going to focus on Scenario 1 (Multi-Tenant) to be able to mark as a solution when completed.  Based on what you wrote, I would be making:

Business Application (cmdb_ci_business_app) - AppX
Application Service (cmdb_ci_service_auto) - AppX-Prod
Application Service (Service Mapping - cmdb_ci_service_discovered_list) - AppXDB-Prod

Is this correct? If so, now I'm confused where, if and where Technology and Business Service and Service Offerings go. (cmdb_ci_service_technical, cmdb_ci_service_business, and service_offering_list)

I do apologize if the questions seem dumb.  This really is my first foray into CSDM vs just maintaining CMDB.

[Barry Kant]

Business Application parenting another Business Application we do not see so much. It doesn't function in some EA functionalities like TPM. It can be done if both have a downstream Application Service to track the software/hardware models. 
Alternative is that the parent is the Business Application Host and the Business Application Components are referenced to that host. 
The number of Application Services below as different deployments reflect the real deployments. 
If that is a shared instance for PROD for multiple customers it will be 1. If all customers have their own deployment then there will be multiple Application Services accordingly.

BR,

Barry

[aliceal]

Thank you for the response. For your reply, I'm going to focus on Scenario 2 (Single-Tenant) to be able to mark as a solution when completed.

Based on what you wrote, I would be making
Business Application Platform Host (cmdb_ci_business_app) - AppY
Business Application Platform Application (cmdb_ci_business_app) - AppYDB
Application Service (cmdb_ci_service_auto) - AppY-Customer
Technical Service (cmdb_ci_service_technical) - AppYDB-Customer
Technical Service Offering (service_offering) - AppYDB-Customer-Prod

Is this correct?