Bharti Airtel Limited is an Indian telecommunications company that operates in 20 countries across Asia and Africa. It has over 261 million subscribers globally, making it the fourth largest mobile operator in the world. In India, Airtel is the largest cellular service provider and offers services including 2G, 3G, 4G, fixed line, broadband, DTH, and enterprise solutions. The document outlines Airtel's vision, mission, strategies around outsourcing and innovation, and analyses its competitive environment using Porter's Five Forces and SWOT models.