The title that appears in your browser tab is known as the page title. Whatever page you will navigate to, the page title will be displayed in the browser tab.
For example: To login if you click on the InsuredMine portal (weblink), you will find the title in the browser tab will be visible as Login- InsuredMine.
So, whenever you will log in and navigate to any page as Contact, Policy or Pipeline Details, and open it in a new page, the tab name will be visible along with the InsuredMine brand name in the tab section.