What Are Horizontal Services?
For just about all enterprise applications, there are common components and services that you will find present. These services typically are lower level and are used by other components that make up the overall application. The terms component and service are being used interchangeably here, although there can be some slight distinctions made.
Generally speaking, you can conceptually split any application into a set of horizontal and vertical services. For smaller applications, this split may be just an abstract idea and not actually be separated in the source code. With larger applications, this might be the best way to structure the software because it allows for more reuse and parallel development.
The main ...
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