Stackato is a Platform as a Service (PaaS) cloud computing product from ActiveState that allows developers to easily deploy applications and services written in languages like Perl, Ruby, and JavaScript to public and private clouds. The presenter evaluates Stackato based on their experience, demonstrating how to deploy a simple "Hello World" Perl application using Mojolicious and exploring Stackato's management console, application updating process, and built-in app store. They conclude that Stackato provides benefits like easy access to platforms and frameworks with minimal differences between development and production.