Dr. Lewis's talks often lead to repeat invitations.  He has spoken at six Euromoney/Institutional Investor events; four annual meetings of the World Economic Forum, in Davos, Switzerland;several Business Week events in Asia, Europe, and the U.S.; three Economist programs, and two major Fortune conferences.

Lewis's presentations cover every dimension of successful alliances.  Specific topics draw from his expertise on building, managing, and repairing alliances between all kinds of organizations - including ones with customers, suppliers, and rivals.  Other popular subjects cover alliances between internal groups - essential for every organization - and getting the most value from mergers and acquisitions.

Lewis designs each talk to meet the program's needs and he is highly interactive with the audience.  He has spoken to groups as large as 4,000 and as small as 10 - the latter usually in a workshop format.

Lewis's message is popular worldwide.  He has presented at major forums in Argentina, Australia, Belgium, Brazil, Chile, China, France, Holland, India, Ireland, Japan, Korea, Mexico, Monaco, Philippines, Portugal, Saudi Arabia, Singapore, Spain, Switzerland, and the United Kingdom.