The Multi-Agent Architecture That Actually Ships — Luke Alvoeiro, Factory

Software engineering productivity is currently constrained by human attention rather than AI intelligence, necessitating a shift toward autonomous multi-agent systems. The "Missions" framework addresses this by utilizing a three-role architecture: orchestrators for planning, workers for implementation, and validators for quality assurance. By establishing a "validation contract" before coding begins, the system ensures correctness independently of implementation, allowing tasks to run for days without drifting. This approach employs serial execution for core logic while parallelizing read-only operations to maintain consistency. A model-agnostic strategy enables developers to assign specific LLMs to roles based on their unique strengths, such as reasoning or code fluency. Ultimately, this structure transforms software development by enabling teams to manage significantly more workstreams while maintaining cleaner, more testable codebases through automated, adversarial verification.