Locally, onsite on the company's own servers? Or locally, as in "deploy it to servers in one of the European AWS regions". If it's the latter, it likely easier

Locally, onsite on the company's own servers? Or locally, as in "deploy it to servers in one of the European AWS regions". If it's the latter, it likely easier. If you already have CI/CD, you are probably automatically deploying to different lower environments, and to production. Like this, you would need to set up additional production deployments to other regions. It has a cost, but you might be able to build on top of a lot of what you've already built. If you need to deploy the software to on-site servers at some company, and it's not on the same cloud host as you are currently on, and you won't have access to the servers the same way you have access to your current production servers, then t's a much different ballgame.