Agreed - but also consider 'multiple points of redundancy'. If you have your service spread across 10K servers, well, it doesn't matter if some go down. Inste

Agreed - but also consider 'multiple points of redundancy'. If you have your service spread across 10K servers, well, it doesn't matter if some go down. Instead of making them all 100% super fault-tolerant for a crazy expensive unit price, you can make them relatively cheap and replace them when they fail.