Nicely said, David;
First and foremost, a loosely coupled architecture allows you to replace components, or change components, without having to make reflective changes to other components in the architecture/systems. This means businesses can change their business systems as needed, with much more agility than if the architecture/systems was more tightly coupled.
Can your SOA do this?
On the Web, it’s a breeze. In fact, you get it for free.
Embrace loose coupling. Embrace the Web.