The most important for me would be that it's easy enought even from remote locations - I can monitor my web application in real time (and also send alerts when something goes wrong). Also being able not only access but control some services like AWS EC2 instances makes this software very powerful tool which has made our life easier than ever! Nothing much yet i'm using mainly because we need more people with z/OS skillset so if you're looking into monitoring your infrastructure then go ahead otherwise don't waste money since they will probably stop supporting them soon anyways :D.