Founded in 1985 by Germain Lamonde in Quebec City, EXFO Inc. operates as a global leader in test, monitoring, and analytics solutions for the communications industry. The specialism is fibre optic and network testing, with products including OTDRs (such as the AXS-115), fibre inspection probes (FIP-500), and 800G test platforms (FTBx-88800) for 5G, FTTx, and data centre applications. Operations span more than 100 countries with around 1,800 employees, serving network operators, hyperscalers, and research customers. VIAVI Solutions acquired the company in August 2021, with EXFO remaining a key player in 400G/800G testing and Industry 4.0 solutions. iOLM technology and the cloud-native RFTM platform support automation and diagnostics. Recent innovations include the BA-1600 1.6T Bit Analyzer and iOptics for transceiver validation.