The end users would be very happy with fewer open screens, multiple popup windows and overwhelming forms. Looking from an implementation point of view, we are more often challenged by a spaghetti system of servers and applications connecting to each other.
While a first step would be to start redesigning the overall architecture, keep in mind this usually is part of a mid to long term plan. It will depend on impact within an organization how soon you are able to realize your desired architecture.
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