1) IndiGo is India's largest airline by market share and the only consistently profitable one. It was founded in 2006 and has a fleet of 68 Airbus aircraft serving 34 destinations across India.
2) IndiGo follows a low-cost business model with only economy class and no meals or entertainment provided. It focuses on efficiency and on-time performance.
3) IndiGo faces competition from other domestic airlines like Jet Airways and SpiceJet but has maintained its lead through consistent pricing and on-time departures. It also faces threats from substitutes like trains and buses for short routes.