Best Buy operates a chain of consumer electronics retail stores selling computers, televisions, appliances, smartphones and other electronics, along with installation and technical support services through its Geek Squad brand. The company has adapted its physical stores to compete with e-commerce by emphasizing services, expert advice and hands-on product demonstrations that online-only retailers can't easily replicate, positioning its stores as showrooms as much as points of sale. Best Buy's Geek Squad service business, providing technical support, installation and repair services, generates higher-margin service revenue that supplements its core electronics retail sales, which tend to carry thinner margins amid heavy price competition. The company's results are sensitive to discretionary consumer spending on electronics, along with product replacement cycles for categories like smartphones, computers and televisions that drive periodic waves of consumer electronics purchases.