Question

Which is better, application integration or application interfaces?

Answer 1

Application interfaces are better than application integration as it leads to loose coupling and high cohesion. It also gives much more flexibility to the overall system. Integration anf application requires much efforts and needs to be done whenever 2 different modules are required to work together. Application interfaces, on the other hand can be reused. One the interface is created, any other module can use it to work with that module. It creates less interdependency and high cohesion amongst the different applications in a system. Extensibility is high and it is easy to extend any existing application for future use by defining interfaces. It becomes much more difficult in case of application integration everytime.