I've just added Kestra as a fully managed service on Elest.io here: https://elest.io/open-source/kestra

We do deployment, security, remote backups, vm snapshots, monitoring/alerts, automated OS & Software updates, and much more. We launched few weeks ago here on HN

There is a free trial, so you can start and get a working instance of Kestra in less than 5 minutes. Let me know what you think :)