This paper describes the evolution in corrosion monitoring technology from off-line historical applications to online, real-time use. It describes the results of laboratory and field investigations performed to characterize the corrosion behavior in inhibited multiphase and dehydrated transport lines, and water injection facilities. The emphasis of the discussion is modern automated electrochemical monitoring instrumentation and methodologies incorporating multiple techniques. The paper describes recent advances in technology (e.g. microchip encoding and distributed hardware with direct to a plant distributed control system - DCS - capabilities) that have made it possible to apply a much simplified monitoring solution to industrial applications on a real-time basis that provide information on corrosion and pitting. This automated, online corrosion monitoring has made it possible to actively involve plant personnel on a real-time basis to minimize corrosion, maintenance, failures and associated costs. Data is presented that was analyzed on a real-time basis and used to quickly assess corrosion and pitting tendencies, correlate short-term changes/upsets in operation enabling troubleshooting, and validating the effectiveness of the existing chemical treatment and remediation programs.