Service Layer Pattern - Could we avoid the service layer on a specific case?

Question

we are trying to implement an application using the Service Layer Pattern cause our application needs to connect to other multiple applications too, and googling on the web, we

Answer 1

As mentioned in the link you posted, the service layer defines an "interface" for clients by encapsulating the (complex) business logic and centralizing the control of transaction involving several resources. The service layer is not only used when you need to "share" services, it just makes it easier. But even with a single consumer, centralizing the control of transaction makes sense.