Views are a way for you to select one or more filters to view the Dashboard, manage the highest value actions, and track activity. To create a new View: select the desired filters, click on Unsaved View, and name your View.
Views Menu Filters - Cloud Provider, Monitored Accounts, Regions, Service, Tags
If you click on a filter name, you will remove other filters in the same category. Inversely, clicking on the filter name again will add all filters in the category. To select or deselect a specific filter, click on the checked box next to the filter name.