How to Effectively Split Large Changes into Smaller, Reviewable Pieces

This document provides practical guidance for breaking large software changes into smaller, independently reviewable units to improve understandability, speed up feedback, reduce merge conflicts, and simplify testing and integration; it details identifying logical units, an authentication example broken into schema/backend/frontend/tests/integration steps, staging practices (incremental development, draft pull requests, CI), commit conventions, and tooling recommendations (Git, GitHub/GitLab/Bitbucket, review tools, and feature flags).