Tech in Asia — India is known as a global leader in IT services. Now there’s a new wave of software-as-a-service (SaaS) from India. The latest Google-Accel India study counted over 500 SaaS startups in India. More are sprouting fast, nourished by manpower and cost advantages as well as the shift to mobile and cloud-based computing. Here’s a drill down into five factors fueling the rise of Indian SaaS.