Press Release

GTT to Present at Cloud Expo Europe

McLean, VA, April 6, 2016

GTT Communications, Inc. (NYSE: GTT), the leading global cloud networking provider to multinational clients, announced today that Andy Johnson, managing director of EMEA, will speak at Cloud Expo Europe on Tuesday, April 12, at 12:00 p.m. GMT, at the Exhibition Centre London. Cloud Expo Europe is the world’s largest cloud event, attracting top industry experts, service providers, analysts and end users. Mr. Johnson will be speaking on a panel titled, Should Telcos Compete or Partner With Cloud Service Providers and Can Mobile Operators Offer Cloud Services? This session, which will take place in the Service Providers and Cloud Technology Theatre, will bring together cloud and network provider executives to discuss the merits of telecom companies moving into the cloud service ecosystem. GTT will also be exhibiting its portfolio of cloud networking services at stand 720 at the event. “We are excited that GTT is participating in Cloud Expo Europe,” said Rick Calder, GTT president and CEO. “As a leading global cloud networking provider, we welcome the opportunity to provide thought leadership on the evolution of cloud and communications services. We look forward to showcasing our service portfolio at this event and demonstrating why GTT offers multinational enterprises a better way to reach the cloud.” About GTT GTT’s global Tier 1 IP network enables clients to connect to any location in the world and with any application in the cloud. Our cloud networking services provide a better way for multinational clients to reach the cloud. Clients trust us to deliver secure solutions with simplicity, speed and agility. For more information, visit www.www.gtt.net. GTT Media Inquiries: Ann Rote +1.703.677.9941 [email protected]