Data Gravity. If you already have all your data in AWS, and your app that is generating new data is in AWS, it makes a lot of sense to get bare metal in AWS to do batch workloads on that data, so there is no egress fees.

We did a calculation in my previous company and it turned out even with the egregious egress costs it was way cheaper to host these huge workloads outside of AWS.

Anyone who has experience with AWS or is looking to hire candidates with known skills. AWS is the industry standard. A lot of quality candidates know it and use it, because it pays the best and has the most job opportunities. And most companies use it because they were first to market and its easy to find candidates.

I'd argue that startups should have a good reason for not using AWS. The costs for their basic services is not that much compared to the cost of development.

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