In 3GPP SA 2, SA5 and in ETSI ZSM the defined architectures are SBA. In other organization an functional view is the basis.
Both have pros and cons. I like to understand where the pros and cons are. Maybe it depending for the requested latency time.
Dear Mr. Klaus
An architect should understand how different quality attributes for a system are impacted by that decision. While there are significant benefits with respect to interoperability and modifiability, other qualities such as performance, security and testability are concerns. More precisely, in complex systems usually a function is deployed on many physical components and a physical component realizes more than one function. Therefore, the functional architecture can be interpreteted as an interface between the requirements and the physical architecture.
You must first understand the two different terms clearly to enable you come to terms with the limitations/benefits.Services is a function of plumbing, electrical, runoff control, wet and dry space separatation and the ease at which they provide comfort and access to repair works.
Wheras Functional Architecture is purely based on space organization, flow and relationship to one another in proportion and unity. Same also depict the architectural purpose on the facade of the building.
There is no such thing as service based architecture, rather services are subject to, and are designed to suit functional architecture.
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