We've developed CAST AI, a multi-cloud platform that connects AWS, Azure, and Google Cloud into one platform, allowing users to deploy, manage, and cost-optimize applications in multiple clouds simultaneously. CAST AI provides features such as autoscaling, opinionated configuration, auto-healing, built-in observability, and the ability for users to leave anytime without affecting their cluster's operation. The platform has been designed to make developers' jobs easier by providing a secure network mesh, eliminating vendor lock-in and cloud waste, while achieving over 60% cost savings for its users.