>I simply cannot understand why people care about "fast" anymore with cheap containerization, CI/CD infra and no more dedicated servers. Who cares if its fast?
People who pay for those extra boxes? Not everybody has your budget (especially when they're building things themselves, on the side, so they aren't even paid).
Ok? That's a non sequitur. No one is forcing you to buy a dedicated server for $1300 a month which probably has the same performance as $250 worth of separate boxes. And separating services isn't what we're talking about here. It's adding horizontal processes across machines instead of on one machine.