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Greg Leffler

Director, Developer Evangelism

Splunk

Greg heads the Observability Technical Marketing & Evangelism team at Splunk, a Cisco company, and is on a mission to spread the good word of Observability to the world. Greg's career has taken him from the NOC to SRE to SRE management, with side stops in security and editorial functions. In addition to Observability, Greg's professional interests include hiring, training, SRE culture, and operating effective remote teams. Greg holds a Master's Degree in Industrial/Organizational Psychology from Old Dominion University.

Articles

July 7, 2026

NETWORKING

The Hidden Costs of Downtime: Q&A with Splunk’s Greg Leffler

5 min read

The latest edition of Splunk’s The Hidden Costs of Downtime report—developed in collaboration with Cisco ThousandEyes—shines a light on the critical role of the network in maintaining digital resilience.