As Dr Ganesh Thakur stated it in his 20th World Petroleum Congress paper, “reservoir management […] relies on the use of financial, technological, and human resources to maximize the economic recovery of hydrocarbons from a reservoir, while minimizing capital investments and operating expenses” (Thakur, 2011). In this context, reservoir monitoring – a central piece to reservoir management, has to embrace and be embraced by multidisciplinary teams rather than being part of a sequential approach through the life of an asset. Interestingly, reservoir management is just as applicable to hydrocarbon reservoirs than it is to large scale storage – be it of CO2, hydrogen, natural gas, etc.The workshop will gather experts from reservoir monitoring, field management, and associated technologies to present and discuss the value of information provided by monitoring, current practices in operating companies, success stories and failures, economic and practical blockers, and will try to bridge the too-often existing gap between these different disciplines by demonstrating how they all fit together as a whole in the context of reservoir management. Further to this broad multidisciplinary endeavor, we hope to familiarize the audience with technologies that are critical to reservoir monitoring, from the well-centric scale to the larger reservoir scale, including in-well surveillance, 4D seismic monitoring, geomechanics, and data assimilation, both presently deployed and emerging new trends. Energy transition pertinent to the Brazilian context will also be discussed in light of current practices from the oilfield. Since that future event is expected to take place in the Brazilian offshore context, we expect to focus the workshop around deepwater reservoir monitoring.