[matthiasb]

I totally agree with you! There are so many layers we could optimize, with various level of difficulty and return in term of cost and co2 reduction.

Legacy tech stack are especially wasteful: HW + OS + App running 24/7 regardless if it used or not.

My intuition is that AWS claims they can reduce CO2 emissions from your onprem stack by 80% because *IF* it was rewritten into a serverless app, it would consume energy only when it runs.

That's one big if! https://aws.amazon.com/de/blogs/mt/how-to-drive-the-discussi....

[mrweasel]

A friend of mine is heavily into AWS. Over the past two years he moved their entire organisation off of EC2 instances. They where apparently running EC2 for everything, and the reflect my experience as well. Organisations mostly see AWS as a hypervisor in the cloud.

We tried to move so many customers to some sort of container, auto-scaling EC2 (i.e. turning the instances off when not in use), Aurora, Lambda, you name it, anything that doesn't necessarily run 24/7. The customers don't like it. They don't feel safe, it's no familiar to them, they don't understand how they should manage it or make up reasons as to why they need to run MariaDB one EC2 or why EFS or S3 won't be able to replace their EC2 backed NFS share.

When it's done correctly, seeing an entire business running without a single VM or physical server is really a amazing thing to see.