Vulnerability scanner is to scan systems within your environment

The purpose of a vulnerability scanner is to scan systems within your environment to make sure there are no missing patches or known threats. Depending on the size of the environment this can be a daunting task. Is this discussion you are to research a vulnerability scanner (try not to duplicate your classmates if possible). In your initial post, you should give an overview of the software and why you chose it. Is it client based or clientless? Is it cloud based? What is the cost of the licensing or is it open source? What are some disadvantages or issues with the software?