SREday Cologne 2027 Q2

The 2027 edition has not been announced yet; these dates are expected, based on the second-Thursday-of-June slot SREday Cologne used in 2025 and 2026. SREday is a series of one-day community conferences on reliability engineering that the Conf42 team runs in cities across Europe, the Americas and India. Cologne has had three editions so far, in June 2025, October 2025 and June 2026, the last two hosted by the incident-management company ilert at its headquarters on Bayenstrasse. The audience is SREs, platform and DevOps engineers and on-call developers in western Germany. Speakers at the Cologne editions have come from companies such as AXA, Trivago, Canonical, Booking.com, Electrolux, Grafana Labs, PagerDuty and TNG Technology Consulting, with roughly 30-minute talks on SRE practice, incident response and on-call, observability, automation and AI for operations. Calls for proposals run on cfp.ninja; for June 2026 the call was open from late February to late May, and no 2027 call is public yet. Talks from past Cologne editions are published free on the SREday YouTube channel, one playlist per event.