Sensory branding is the promotion of products through appealing to the customer's senses, including sight, sound, smell, touch, and taste. Techniques like visual branding with color and arrangements, auditory branding through recognizable sounds, and olfactory branding using distinct scents are employed to enhance customer experiences and increase sales. The document highlights various examples from brands like Singapore Airlines, Nike, and Mercedes-Benz, illustrating how sensory cues can shape consumer behavior and perception.