BOULDER, Colo.--(BUSINESS WIRE)--Zayo Group Holdings, Inc. (NYSE: ZAYO), a global provider of bandwidth infrastructure, continues to expand on its mobile infrastructure strategy in major U.S. markets. The company’s approach leverages initial anchor fiber-to-the-tower (FTT) sales to major wireless carriers. This positions Zayo to provide additional services to wireless carriers and high-bandwidth non-wireless customers through follow-on sales on or near the initial anchor FTT network builds. Ove