Walgreens Boots Alliance, Inc. engages in the provision of drug store services. It operates through the following segments: Retail Pharmacy USA, Retail Pharmacy International, and Pharmaceutical Wholesale. The Retail Pharmacy USA segment consists of the Walgreens business, which includes the operation of retail drugstores, health and wellness services, and mail and central specialty pharmacy services. The Retail Pharmacy International segment consists of pharmacy-led health and beauty retail businesses and optical practices. The Pharmaceutical Wholesale segment consists of the Alliance Healthcare pharmaceutical wholesaling and distribution businesses and an equity method investment in AmerisourceBergen. The company was founded in 1901 and is headquartered in Deerfield, IL.