Loco is a comprehensive Rust framework that tackles authentication, tasks, migrations, and more, streamlining development for full-stack applications. The guide focuses on deploying a full-stack SaaS template with Loco on Shuttle, integrating pre-built authentication, and implementing Stripe subscription payments. Key steps include setting up API keys, adding necessary dependencies, handling database migrations, and constructing various API endpoints for subscription management. Additionally, frontend integration using React and error handling customization are discussed.