Make Stalwart scalable

[malini]

This is a milestone to track the investigation around moving to Fargate from EC2. Failing this, we can stay on EC2 and learn to autoscale what we have.

[thundernotion]

Issues cannot be both on the Milestones and Tasks boards. This appears to be a Task, removing from Milestones board

[thundernotion]

Issues cannot be both on the Milestones and Tasks boards. This appears to be a Task, removing from Milestones board

[thundernotion]

Issues cannot be both on the Milestones and Tasks boards. This appears to be a Task, removing from Milestones board

[thundernotion]

Issues cannot be both on the Milestones and Tasks boards. This appears to be a Task, removing from Milestones board

[thundernotion]

Issues cannot be both on the Milestones and Tasks boards. This appears to be a Task, removing from Milestones board

[thundernotion]

Issues cannot be both on the Milestones and Tasks boards. This appears to be a Task, removing from Milestones board

[thundernotion]

Issues cannot be both on the Milestones and Tasks boards. This appears to be a Task, removing from Milestones board

[thundernotion]

Issues with a parent cannot be on the Milestones board, removing. Either move your sub-issues up to the parent issue, or turn this into an independent Milestone issue that has sub-issues.