There’s no such thing as a small software team anymore

Software architecture must now be designed for agent-parallelism, not just human-parallelism.

Key Points

AI coding agents have fundamentally changed the scale of software production; a small team utilizing 20-100 agents can generate commit and PR volumes previously seen only in massive organizations like Uber.
High modularity (e.g., microservices) is now a necessity for small teams to enable ‘embarrassingly parallel’ workflows and prevent agents from creating net-negative productivity through merge conflicts and broken builds.
The traditional overhead of modularity—such as boilerplate and CI configuration—has been neutralized because AI Agents can now automate these tasks.
Modular design is critical for agent performance because smaller modules fit more effectively within the limited context windows of current LLMs.