This essay examines the effect of social influence on consumer behaviour, focusing on Woolworths Group, an Australian retail organization. It analyzes how cultural factors, including values, beliefs, and ideologies, and social class, defined by income, neighbourhood, and profession, impact consumer buying decisions. Woolworths' marketing strategy, based on the wheel consumer analysis (affect and cognition, consumer behaviour, and consumer environment), is discussed, highlighting how the company tailors its products and offerings to cater to diverse customer preferences. The essay further explores the 4 Ps of marketing mix (product, price, place, promotion) at Woolworths, emphasizing how each element is influenced by consumer behaviour analysis. It also delves into target market analysis, noting Woolworths' focus on the middle to upper-income groups and the strategies used to influence this market, such as co-branding, endorsement, and multibranding. Finally, the essay discusses market segmentation, explaining how Woolworths divides its consumers based on demographic, geographic, behavioural, and psychographic factors to offer products tailored to specific groups.