Ask HN: High Quality infrastructure conferences in Europe

Hi,

I attended velocity once in Amsterdam and remember the quality of the talks and the discussions worth the high cost of a ticket. It seems velocity doesn't happen anymore and I wanted ask around if you know other conferences focused on similar topics (infrastructure, infrastructure architecture, platform architecture, cloud architecture, etc) that have high quality talks and are not mostly market ting veiled as conference) and see taking place somewhere in Europe. Or at least relates, like the goto conference.