Coordinating something that large is a feat. At that scale, everything is more difficult. Deploying updates to 10,000 machines, redundancy, upgrading, etc. Not

Coordinating something that large is a feat. At that scale, everything is more difficult. Deploying updates to 10,000 machines, redundancy, upgrading, etc. Not to mention the avoiding bandwidth, memory, and process limitations, load balancing, and testing it, which they needed a clever solution to achieve.