I've used condor for ~5 years now, mostly for running simulations and processing data. Everything i've done with it has been trivially parallelizable (divide data into chunks based on time, etc), and in those applications it has been a superb tool that just works.
It should be possible to run a scalable website with it, but then you don't get "infinite" scalability like cloud services offer, since you're limited by the size of the compute pool. It would probably have its pitfalls.
That being said, coming in without knowledge of either, i found it much easier to learn and get started doing things with condor than kubernetes. I had all kinds of issues just getting simple things like LaTeX compilation as part of gitlab CI to work reliably. Clearly the experts know how to make things go, but condor is lower barrier to entry. For use cases where condor CAN work, especially data processing, i always recommend that.
It should be possible to run a scalable website with it, but then you don't get "infinite" scalability like cloud services offer, since you're limited by the size of the compute pool. It would probably have its pitfalls.
That being said, coming in without knowledge of either, i found it much easier to learn and get started doing things with condor than kubernetes. I had all kinds of issues just getting simple things like LaTeX compilation as part of gitlab CI to work reliably. Clearly the experts know how to make things go, but condor is lower barrier to entry. For use cases where condor CAN work, especially data processing, i always recommend that.