[1] Etzion has been instrumental in the development of the complex event processing area of computer science.

[2] Etzion was the Chief Scientist of Event Processing at the IBM Haifa Research Lab.

[2] Previously, he was Lead Architect of Event Processing Technology at IBM Websphere and a Senior Manager at the IBM Research Division, managing a department that has pioneered projects shaping the field of event processing.

He has authored or co-authored papers in technical journals and conferences on topics related to active databases, temporal databases, Rule-based systems, event processing and Autonomic computing.

[6] Prior to joining IBM in 1997, he was a faculty member and Founding Head of the Information Systems Engineering Department at Technion and held professional and managerial positions at Sapiens International Corporation and in the Israel Air Force.