AzDO is "decent", depending on your needs, but it's in an unfortunate zombie state where Microsoft is supporting it just enough to keep it stable and keep certain enterprises happy and consistently insisting that AzDO has a roadmap and is still beloved, but it is very clear that all of the actual resources are going to the GitHub side of the house in 2023.

(One of the most recent signs of this crazy zombie state that a recent feature for AzDO was given the absurd only Microsoft could do brand name "GitHub Advanced Secure for Azure DevOps", and it is indeed a bundle of GitHub features several years old at this point finally provided to AzDO users. Other signs include all sorts of AzDO libraries and roadmaps and related repos openly hosted on GitHub with last updated dates in 2019 and 2020.)

From an outsider perspective, Microsoft probably has a lot of sentimental and internal engineering reasons it doesn't want to truly wrap up so much of its operations in North Carolina (AzDO's ancestral home going back to early days of TFS), but the writing seems to be on the wall that what's left is a skeleton crew mostly working for GitHub full time and then sort of applying things part time back to AzDO. It doesn't seem to me to be sustainable long term, and every day it feels more like an Old Yeller situation where Microsoft is just prolonging the inevitable and making the pain worse for everyone involved.