"Otto is very young and while we tout it as a successor to Vagrant, it'll take time to reach the maturity level that Vagrant is already at. We don't recommend dropping Vagrant today, but look to Otto for the future.."
• Simple and straightforward language (YAML) • Agentless Architecture • Huge collection of built-in modules • Great community, very popular on Github - 13k+ stars and almost 4k forks