Services sector is largest (60% GDP, 31% employment); fastest growing, increasingly tradable. IT services: Global competitiveness, Major export earner, Young educated workforce advantage, Bangalore tech hub. Business services: Consulting, accounting, legal services, High-value additions. Retail and wholesale: Fragmented but consolidating, Organized retail growing, E-commerce disrupting. Hospitality and tourism: Hotels, restaurants, Travel, Event management. Financial services: Banking (post-reform competitive), Insurance, Capital markets. Telecommunications: Highly competitive, Reduced costs, Widespread coverage. Transportation: Road, rail, air, sea; supporting trade. Healthcare and education: Growing private sector, Medical tourism, Quality improvement. Media and entertainment: Bollywood, News, Digital platforms. Characteristics: Less capital-intensive than manufacturing, Knowledge-intensive, Skill-dependent, Increasingly digital. Challenges: Quality consistency, Regulation fragmentation, Skills development, Infrastructure (digital). Opportunities: Global outsourcing demand, Rising domestic demand, Digital economy, E-commerce, Online services. Export potential: India world leader in IT services, Growing other services exports. ICAI focus: Services composition, growth drivers, tradability. Exam tip: Services now main growth driver; IT services are India's competitive advantage globally.