A lot of practices are moving to Remote Desktop services (even the smaller offices) because it's easier to maintain with a single machine to update and backup.
Can you elaborate on this, please?
Yep, Remote Desktop Services, formerly Terminal Services, is basically what Bert said. It's how AC in the cloud works too. All users work off a single machine so you only need to maintain and update one server. Another huge plus is that a user can move from machine to machine and have the exact same setup.
You can use virtually any client and it doesn't matter if it's wired or wireless. Performance is virtually identical. There are some things to look out for when implementing an RDS setup. For example thin clients aren't always the best choice if you have locally attached scanners like Fujitsu ScanSnaps. In that case you would want to use a windows-based "thin client" so you don't have to buy new scanners.
With RDS, you want to get all network devices if possible. Network scanners and printers. In the past network devices were significantly more expensive, now they are becoming the norm. For instance,
Brother (ADS-2800W) now has a network document scanner that costs as much as a Fujitsu ScanSnap (a board favorite). It scans directly to the server like the Canon MFC above. Previously this was only available on higher-end models that cost $800+.
With affordable network printers, fax servers, and scanners on the market now, it's a good time to switch to RDS. We have RDS on all of our servers planned for 2018.
The other thing is if all of your desktops are nearing end of life, it's usually cheaper to implement RDS when you have 5 or more computers. You can even keep using them. When you need a new one, you can basically use any device so replacements are very cheap. Spares are easy.