How Lyft Does Code Review

Lyft’s engineering culture emphasizes autonomy and a tiered approach to service criticality: strict, formal review processes for tier-zero services and lightweight, team-defined reviews for others. The report highlights the Fleet Platform team’s practices (small PRs, broad visibility, minimal formal process) and explains Lyft’s "emoji-driven development," where emojis and associated slash commands (e.g., 🚀 to merge, 👍 to approve) are used as commands in PR comments to control CI, merging, and reviews.