Fubaredness Is Contagious

Have you ever needed to expand your colocated servers at more than one provider and allow applications to communicate as if they were on the same LAN, possibly over multiple sets of firewalls and layers of NAT? Or, maybe you’ve wanted to move from one hosting service to another to take advantage of lower pricing or better uptime but would have preferred to do it gradually instead of in a single swoop (and a weekend-long maintenance window)? Or, maybe you’ve considered the Amazon EC2 cloud to host part, but not all, of your infrastructure? If your answer to any of these questions is yes, what you want is essentially a multisourced infrastructure.

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