We are using it to identify security weaknesses and vulnerabilities by performing dependency checks of the source code and Docker images used in our code. We also use it for open-source licensing compliance review. We need to keep an eye on what licenses are attached to the libraries or components that we have in use to ensure we don't have surprises in there.
We are using the standard plan, but we have the container scanning module as well in a hybrid deployment. The cloud solution is used for integration with the source code repository which, in our case, is GitHub. You can add whatever repository you want to be inspected by Snyk and it will identify and recommend solutions for your the identified issues. We are also using it as part of our CI/CD pipelines, in our case it is integrated with Jenkins.