Relational Databases in 2024

Hey everyone, appreciate any input. I developed a few SQL databases back in 2010, I used C# as the front end, desktop application. I've been out of the coding game since then lol. I'm looking at devloping something similar, but it's 2024. I can't even imagine how much has changed since then, what are people doing for low demand (probably less than 25 concurrent users) databases and what are the using as a front end? Is everything on AWS now?? Am I going to be in just way over my head? Thanks for any and all insight in advance.