Can / are technical services be supported by infrastructure CIs?

[Max Nowak]

Hi,

I'm a little confused about technical services, maybe someone can help me clear this up.

Let's say I have a technical service called "Database Services", with offerings like "Oracle Prod DB Mgmt", "Oracle Dev Mgmt", and so on. Someone could order one of these offerings as a "building block" for an application service (or something else), at least that's how I understood it.

Now, as far as I understand / imagine it, these offerings would offer you the provision and support of an Oracle DB instance. Now, a colleague came along and said "and the technical service would then depend on the underlying infrastructure that hosts the database instances". So in his mind, this is what this example would look like:

Initially, I disagreed, because this isn't a relationship mentioned in CSDM, but he reminded me that if the underlying infrastructure would fail, I wouldn't be able to provide the database service, so there must be a dependency there.

What do you think? Is this "correct" modeling according to CSDM, or am I (or my colleague) misunderstanding something here? I feel like the dependency is already modeled by the "hosted on" relationship of the database instances and could then be rolled up all the way to the service, but I'm not sure.

[Barry Kant]

good day all,

to add to Steve's example which I think is the most common one you can actually add a depends on relation between the oracle offering and the linux offering. This isn't reflexted as such in the CSDM collateral but but is part of the Service Builder (DPM) ideas (comes from legacy SPM). I usually do that from a business offering to underpinning technical offering to reflect the Chain of Support for this Business Offering.

In Incident mgmt this can help in a very short list of assignment groups for such offering based on these offering-offering relations. It can also help in Incident swarming concepts (as that is the total chain of support in my opinion. 

Cheers,

Barry

[Ed Laar]

Hi guys,

A perhaps to simple approach to this example / CSDM: Technical Services are there to support/ provide Application Services and Application Services represent the Business Service Offerings that are exposed to the end-users.

I think there are two ways to look into this one: 1) A Technical Service Offering represents the Service that is provided to one or more CI's: In this way the Technical Service is not dependent of the CI as for example a Support group still exists and does it's work even if the supported CI's are down or do not exist anymore

2) A Technical Service called Dbase Service depends on the CI's that are the Dbase itself, the Dbase server and is supported by the Dbase Service solver group. In this view the Technical Service represents all the components what is 'simply' an other way of looking to the concepts.

What do you think?

Ed