Q. Where have activities gone in the Azure portal?

A. Initially the Azure portal had journeys which enabled a user of the new Azure portal to move between various activities they were undertaking instead of losing current progress. Journeys were renamed to activities in the hub however this has since been removed. To access the various blades and activities you have open is performed by clicking the down arrow in the top right corner as shown.

It is possible to move between the open activities and also close them as required.