The autoscaling is nice because a lot of performance issues just get resolved without much meddling by the ops team, buying time for proper optimizations should

The autoscaling is nice because a lot of performance issues just get resolved without much meddling by the ops team, buying time for proper optimizations should it get out of hand. The disadvantage is that people don't think hard about performance requirements anymore. Premature optimization is bad, but it's also a warning sign if a project has no clue whatsoever how intensely the system is going to be used.