ACG Research conducted primary research on the potential impact of open optical networking on the evolution of service providers' transport networks, surveying 52 network engineering and planning practitioners globally and engaging in detailed interviews with an additional four service provider managers and executives. Download the report to learn about their findings, including the value of open optical networking, the approach service providers are likely to take in their open optical networking investments and deployments, and their preferences about how they will work on this network transition over the coming years.