Now you have convinced people to invest in building services for flexibility, redundancy elimination and business/IT alignment. Great.
Each business line goes about their way to achieve it, but soon will find out that there is one conspicuous issue: who is the Service Owner? If I build this service and it is used in multiple places, who pays for the changes if the changes are those I do not specifically "care about" in my line of business?
Thus appears the notion of Service Domains, where a domain defines a set of related services that some "one" can own, maintain, support and (obtain) fund (ing).
To make a chance to a service, contact the Service Domain Owner.
Here is a question for you:
If I don't need to change the service description, can I change the service implementation? If so, do I still have to go to the service domain owner?