Various embodiments enable navigation flows that occur within a single tab to be tracked through the use of identifiers that are created and passed between client-side and server-side software. The client-side and server-side software work in concert to utilize these identifiers to track navigation within a particular tab. In at least some embodiments, a client can request a web page from within a tab and, responsive to that request, a server can create an identifier and associate the identifier with the web page. The web page and identifier can then be returned to the client. Subsequent web page requests from within the tab include the identifier so that the server knows that the request came from the same tab.