I'm personally in the Georgia Tech Online Master's in Computer Science (OMSCS) program right now and can't say enough good things about it. The coursework is rigorous, deep, and varied, you really do learn quite a bit through the program and more than just random learning on your own, you get a degree out of it. Plus you get the opportunity to do some research and publish papers.
I'm also a proud OMSCS alum! But "the opportunity to do some research and publish papers" is certainly not the default. Can you describe how you were able to do that?
2. VIPs! These I consider one of the "hidden" gems of OMSCS and what I personally did. You can see them here: https://www.vip.gatech.edu/ but basically instead of a class for a semester (but counts as a class for credit and graduation purposes) you work for a professor on a project with several other grads/undergrads. I did one this past semester and was asked to stay on as a research assistant over the summer doing work in NLP. Really excited for it actually and has been a fantastic opportunity. I put a lot more details here - https://redd.it/u6cj5z
3. Master's Project/Thesis - This is the option to do a Master's Project or thesis instead of just ten courses, but it does require more work from the student to find a professor and do that. There's many more details here https://redd.it/9t48b2 and frankly I wish I had done so, but too late now.