Software-Defined Wide Area Network Market Growth Trends, Current Demand | #global Optical Transport Network (OTN) Market Research Report: Information by Technology (Wavelength Division Multiplexer # Dense Wavelength Division Multiplexer and others) # Network Support and Others) # Optical Packet Platform and Others) # End User (IT/Telecom # Healthcare # Retail # Government and Others) # Region (North America # Europe # Asia-Pacific # Middle East & Africa and South America) - Forecast till 2030