I’m not convinced this is entirely true. The upfront cost if you don’t have the skills, sure – it takes time to learn Linux administration, not to mention management tooling like Ansible, Puppet, etc.
But once those are set up, how is it different? AWS is quite clear with their responsibility model that you still have to tune your DB, for example. And for the setup, just as there are Terraform modules to do everything under the sun, there are Ansible (or Chef, or Salt…) playbooks to do the same. For both, you _should_ know what all of the options are doing.
The only way I see this sentiment being true is that a dev team, with no infrastructure experience, can more easily spin up a lot of infra – likely in a sub-optimal fashion – to run their application. When it inevitably breaks, they can then throw money at the problem via vertical scaling, rather than addressing the root cause.
But once those are set up, how is it different? AWS is quite clear with their responsibility model that you still have to tune your DB, for example. And for the setup, just as there are Terraform modules to do everything under the sun, there are Ansible (or Chef, or Salt…) playbooks to do the same. For both, you _should_ know what all of the options are doing.
The only way I see this sentiment being true is that a dev team, with no infrastructure experience, can more easily spin up a lot of infra – likely in a sub-optimal fashion – to run their application. When it inevitably breaks, they can then throw money at the problem via vertical scaling, rather than addressing the root cause.