Hi Mehdi,
Dates can be flexible at this point but I had to chose some dates to get things moving. If a weekend works better for everyone we can try to do that. I chose week days because that is easier for people who work on the platforms to attend. A significant purpose of this sprint is to get the Debian community together with the cloud platforms it runs on. Seattle makes sense because all 3 major cloud providers are based here (AWS, Azure, GCE) and Seattle is home to hundreds of small startups and cloud focused companies and groups. I realize that the Debian community is spread out everywhere so I don't think there is any specific city in the world that would ever accommodate everyone ideally. My hope is that we have enough quorum to have the right discussions in person. I am also intend to setup a video conference for those that are not able to make it in person and want to be part of the sprint.
Potential attendees were present at Debconf and this idea was floated by Steve then. I didn't hear any significant dissent and everyone thought it was a good idea to move forward.