Five Stacks Before Lunch: The Parallel Coding Playbook for Pulumi

AI coding can operate in two modes: the 2x mode, which involves sequential work where a human interacts with a single agent, and the 10x mode, which leverages parallel processing with multiple agents working concurrently on different tasks. The 10x approach involves a more complex setup, using a playbook with five key patterns to facilitate the coordination of multiple agents without conflict, focusing on infrastructure as well as application code. These patterns include using issues as specifications, a plan/build/validate loop, parallel git worktrees, fresh-session reviews, and a self-healing layer. The infrastructure adaptation, exemplified by Pulumi, requires special considerations such as stack-based isolation instead of worktree-based, deterministic validation through tools like pulumi preview, and policies that are written as actionable instructions for self-healing. The goal is to achieve efficient parallel processing that minimizes human bottlenecks and infrastructure conflicts, ultimately allowing for multiple tasks to be reviewed and integrated smoothly in a single session.