How can I successfully integrate an outdoor cat into my household with other indoor cats?

Integrating an outdoor cat into a household with indoor cats can be done successfully by following a gradual introduction process. Start by keeping the new cat in a separate room with their own food, water, and litter box. Allow the cats to smell each other through a closed door and gradually introduce them through short supervised interactions. Provide plenty of resources and space for each cat to feel comfortable and establish their own territories. With patience and positive reinforcement, the cats can learn to coexist peacefully.