Interconnectivity is great, isn't it? :)
Joking aside, we're still trying to recover from the rampant spaghetti architectures we have let evolve in our enterprises. Let's not repeat these mistakes as we seek everything in the web to be interconnectable. Cloud ESBs are an interesting development in this space, since they offer the promise of easy integration as well as loose-coupling, which surely has to be key to all of this.
With great power comes great responsibility...
SOA ESB SAAS PAAS Web 1.0 Web 2.0 Web 3.0 Web 4.0