Walgreens Boots Alliance reported strong Q4 2021 results, exceeding expectations with a 12.8% increase in sales to $34.3 billion and adjusted EPS of $1.17, reflecting robust growth in both the International and United States segments. The company surpassed its COVID-19 vaccination goal, administering 13.5 million vaccinations during the quarter, and achieved over $2 billion in annual cost savings through its Transformational Cost Management Program.