On-Premise

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Opposite of Cloud Computing

Ahrefs has a rented colocation data center in Singapore with a relatively homogenous infrastructure
Ahrefs has saved ~USD 400 million by ensuring its infrastructure is NOT 100% in the IaaS cloud during the last 2½ years. This figure is growing more prominent as we start another massive colocation data center with new hardware.
But with the mass layoffs in Big Tech in recent months, this may be an opportunity to re-evaluate the approach to the cloud, consider a reverse migration from the cloud, and hire seasoned professionals of the data center world
If you start a new company, consider buying a rack and server and putting them in your basement. That might improve your sustainability from day one.