The building features a 90-seater lecture theatre and four 40-seater classrooms, one of which has a translation booth allowing students to listen to real-time lectures in their own language.
The Executive Education campus also houses 14 syndicate rooms, a boardroom, cafeteria and social space. The learning space can host 50 guests for a formal dinner, or up to 180 people for a networking event.
Cass Dean, Professor Steven Haberman, said: "We are delighted to begin a new chapter for our Executive programmes in one of the City's largest Executive Education campuses.
"This will bring our high-quality Executive MBA and tailor made courses to the heart of London's global financial district and beyond.
"With a mix of learning and networking spaces, the campus is designed to foster the innovative thinking and collaboration required of our executive students.
"This is an outstanding platform for us to deliver compelling content and a learning experience which will enhance business performance and accelerate personal growth."
Chief Operating Officer at Cass Business School, Alex Fraser, added: "Cass is excited to have had the investment from the University to allow it to acquire space for our executive clients in the very heart of the City of London.
As well as hosting Cass's Executive MBA (http://www.cass.city.ac.uk/
The Executive Education campus is 10 minutes' walk from the main Cass building on Bunhill Row. It is opposite the Museum of London and close to St Paul's, Barbican, Farringdon and Moorgate tube stations.