Testing microservices is like shepherding a flock of wild and naughty cats. Each service is its own—autonomously created, delivered, and scaled—yet they all must operate perfectly. Where monoliths have a little bit easier testing, microservices have the added challenge of making each service integrate with others. The goal is not merely that one service does function, but that it communicates, handles failures gracefully, and doesn’t doom the system like dominoes.