Delhi and NCR (includes Gurgaon and Noida): Call centers, transaction processing, chip design, software etc. The prominent companies are GE, American Express, ST Microelectronics, Wipro Spectramind, Convergys, Daksh, and ExL. All of them employ approx. 73,000 people.

Mumbai: Financial research, back office, software etc. Prominent BPOs are TCS, MphasiS, i-flex, Morgan Stanley, Citigroup etc. and they employ approx. 62,050 workers.

Bangalore: Here the BPOs are mainly engaged in Chip design, software, Bio-informatics, call centers, IT consulting, tax processing etc. Main firms are Infosys, Wipro, Intel, IBM, SAP, SAS, Dell, Tisco, TI, Motorola, HP, Oracle, Yahoo, AOL, E & Y, Accenture etc. and the total number of employees is approx. 109,500.

Hyderabad: Main areas of work are software, back office and product design. HSBC, Satyam, Microsoft are some of the prominent players of the field employing as many as 36,500 people.

Chennai: Software, transaction, processing and animation are the main areas of their specialization. Some of the prominent BPOs are Cognizant, Standard Chartered, Polaris, EDS and Pentamedia. Together they employ as many as 51,100 people.

Kolkata: The BPOs of the region concentrate mainly in Consultation and software. PwC, IBM, ITC InfoTech, TCS are some of the prominent players of the field employing around 7,300 people.

Pune: Call centers, chip design, embedded software are the main areas. MsourcE, C-DAC, Persistent Systems, Zensar are the key players and they employ approx. 7,300 people.