Maint notification - We are migrating 3000 customers to AWS this weekend

Hi,
We just received notification that CircleCi will be down this weekend (3 days notice); we have been planning our migration for 6 months of 3000 customers to AWS (DHL etc). You outage will be right in the middle of our migration and causes significant risk.

I am awaiting a response to our ticket and raised an issue with your CEO.

Chris