We use Debian OS in our org in two different aspects. One for the servers that powers most of our websites and the next is on the staff laptops. We try to avoid as much as cost on licenses and any unwanted fess so we opted Debian OS. Its very good on our servers and helps us to run all our websites and application using the Apache web server. The staff computers are also using this Linux flavor since its easy to use and manage the machines.
Pros
Security
Easy of use
updates
Application support
Cons
OS support
support to modern applications
Initial kernel loading time
Likelihood to Recommend
Debian OS is well suited for almost all purposed that we have in our org. It can be used as a client OS with all permissions set in place. Also it can be installed on a Server to run various server applications and web apps. So in general for us Debian OS is the best OS that runs on all our needs.
I have used Debian OS since I inherited a personal desktop in 1995. I now run it on multiple computers at home, and my kids are more familiar with XFCE than Windows... I also use it on all of my web servers for my business. There have been a few hiccups over the years, though mostly were due to kernel issues that I would have seen on any distribution.
I used to run the "testing" distribution, but have migrated to the "stable" distribution, not because it is more stable, but I just want to spend less time upgrading.
I highly recommend Debian OS - very little "extra" cruft, and I have made lots of old hardware work that had been rejected by others as "too slow", but just needed a simpler OS on it.
Pros
easy to use
easy to install
open source software
Cons
sometimes I have trouble with drivers; took me a while to figure out that my HDMI TV was overriding my onboard sound card.
Likelihood to Recommend
It is appropriate in all scenarios. Particularly when looking for truly open source/free licenses and you are concerned about distributions that use more closed source/more restrictive licenses.