Mito aims to democratize AI-powered video creation, making advanced technologies accessible to everyone. Their journey revealed significant infrastructure and workflow challenges in producing long-form narrative content with generative AI. These challenges included managing massive local media libraries, the absence of real-time collaboration, and lengthy rendering latency. Inconsistency across generative models and capacity constraints with public APIs further complicated their efforts. To overcome these issues, Mito designed a serverless, asynchronous architecture on Google Cloud. They utilized Cloud Run for their API and background workers, enabling scalable processing. Google Cloud Pub/Sub served as their central event bus for decoupling job execution. Media assets are stored in Google Cloud Storage and delivered via Cloud CDN to minimize latency. An isolated database architecture with Cloud SQL and PostgreSQL supports analytics without impacting production. They leverage foundational models through Vertex AI, alongside custom system prompts. Their frontend enforces a "Rule of 6" to optimize prompt variables and prioritizes still-frame generation for cost efficiency. This solution successfully enabled a landmark national broadcast campaign for Movistar Plus+, described as 95% AI-generated. The campaign aired on every major Spanish television channel, showcasing AI Director's conversational capabilities and real-time collaboration. Mito's architecture is future-proof, poised for increasingly rapid rendering times and advanced AI capabilities. They built an automated evaluation harness powered by Gemini to validate creative outputs. Their AI Director dynamically routes tasks across multiple specialized models for intelligent coordination. Mito also embraced an "imperfect aesthetic" to enhance authentic storytelling, incorporating surreal visual elements.