Brett McLain built a SaaS solution in 60 days using MeteorJS to manage remote devices that customers used to control things like vehicle starters and irrigation pumps remotely via SMS or phone calls. He chose MeteorJS because it provided an integrated full-stack framework with reactivity out of the box. Key features included authentication using accounts packages, managing user devices and commands in MongoDB, and integrating Twilio and Stripe for SMS/call functionality and payments. The final application allowed users to control devices, monitor usage, and subscribe to the service with a credit card through Stripe for a simple backend-free payment experience.