Stackato is a PaaS cloud platform from ActiveState that allows developers to easily deploy applications to the cloud. It supports multiple languages including Perl, Ruby, and JavaScript. The presentation demonstrated deploying simple Perl apps to Stackato using the Mojolicious framework. Key benefits of Stackato include minimal differences between development and production environments, one-click deployments, and allowing developers to manage infrastructure. ActiveState is very open and provides documentation, examples, and a community forum to support Stackato users.