Indigo Airlines is India's largest low-cost carrier with a 27% market share. It follows a 3 stage approach to service marketing - stage 1 focuses on tangibility and intangibility, stage 2 examines the 7Ps of the service mix, and stage 3 provides recommendations. There are gaps in Indigo's current service including a lack of upward communication, absence of customer-driven standards, failure to match supply and demand, and lack of integrated marketing. Recommendations include improving communication, providing customer-driven training, better demand forecasting, and increased promotional activities.