[ghaff]

That's often how unconference formats work for at least part of the day. Unconferences seem to have fallen a bit out of fashion although AFAIK DevOps Days typically combine some curated main stage talks with smaller unconference facilitated discussions. I haven't been to one for a while though.

[rutthenut]

I've been to the last couple of London DevOpsDays and find the presentations often interesting, but the ad hoc sessions in the afternoon can be some of the best parts.