"To maintain citizen equality, nearly all menial labor is handled by a droid workforce. Zakuulans rely on it for medical care, construction, law enforcement, and more. Droids provide elderly companionship and safe childcare, and they cook, clean, run errands, and keep the Spire in order. Without droids, the city's comfort and happiness would vanish.
Overwatch is the hub through which all droid labor functions. This command center issues orders to its workers and keeps every droid running smoothly. To reduce human error as much as possible, only those with highest clearance, including the Emperor, are permitted to enter. Automated life-form detection and a patrol of Skytroopers ensure that no one without permission can enter."