The IT consulting industry can be viewed as a three-tier system:
- Professional Services firms which maintain large professional workforces and command high bill rates. These firms are increasingly sourcing their employees from Low-cost Nations .
- Staffing firms, which place technologists in businesses on a temporary basis. These firms are pejoratively known as " Body Shops ". While they are geographically limited by their customers, they can exploit global cost differences by bringing Guest Worker s to their host country. Body Shops are typically distinguished from Consultancies by their commercial practice of pricing service by the day (the input), rather than by the results of their work (the outputs, or deliverables).
- Independent Consultant s, who function as contractors (a.k.a., " 1099 "), employees of staffing firms (a.k.a., " W-2 "), or as subcontractors in their own right (a.k.a. " Corp-to-corp ").
There is a relatively unclear line between often have degrees in Accounting , Economics , or Finance .
The following is a list of the largest IT consulting firms in the world by number of consultants. For some companies, their number of consultants will not be equal to their number of employees, but the headcounts below are intended to only reflect consultants.
- Accenture ( New York , NY ) (106,000)
- Affiliated Computer Services ( Dallas , TX ) (40,000)
- Altos Incorporated ( Irvine , CA ) (100)
- Answerthink ( New York , NY ) (1000)
- Avanade ( Seattle , Washington ) (4,000)
- BearingPoint ( McLean , VA ) (16,000)
- Booz Allen Hamilton ( McLean , VA ) (16,000)
- Burntsand ( Vancouver , BC ) (150)
- Capgemini ( New York , NY ) (55,000)
- CGI Group ( Montreal , Canada ) (25,000)
- Computer Sciences Corporation ( El Segundo , CA ) (79,000)
- Deloitte Consulting LLP ( New York , NY ) (12,000)
- DeNové ( London , UK )
- Electronic Data Systems ( Plano , TX ) (132,000)
- Fujitsu Consulting ( Edison , NJ ) (2,400)
- Hitachi Consulting ( Dallas , TX ) (1,000)
- HP Technology Solutions ( Palo Alto , CA ) (65,000)
- IBM Global Services ( Somers , NY ) (175,000)
- IT Convergence ( San Francisco , CA )
- Keane ( Boston , MA ) (9,000)
- MNX Solutions ( Monroe, MI )
- Ocean Consulting ( Vancouver , WA )
- Perot Systems ( Dallas , TX ) (6,000)
- Sability ( Atlanta , GA )
- Sapient ( Cambridge , MA ) (3,000)
- Sapphire Consulting ( Woburn, Massachusetts ) (2,300)
- Sierra Systems ( Vancouver , Canada ) (1000)
- SRA International, INC ( Fairfax , Virginia ) (5,000)
- Telcordia Technologies ( Piscataway , NJ ) (4,000)
- The Paragon Group ( Columbus , OH ) (100)
- The Titan Corporation ( San Diego , CA ) (12,000)
- Unisys ( Blue Bell, Pennsylvania ) (37,000)
- VARSYS Solutions ( Chicago , IL )
- Whittman-Hart ( Chicago , IL ) (300)
- HCL Technologies ( Delhi , India ) (30,000)
- Infosys Technologies Ltd. ( Bangalore , India ) (52,000+)
- Satyam Computer Services ( Chennai , India ) (30,000+)
- Tata Consultancy Services (TCS) ( Mumbai , India )(65,000+)
- Wipro Ltd. ( Bangalore , India ) (50,000+)
- Atos Origin ( Hoofddorp , Netherlands ) (47,000)
- Business & Decision ( Paris , France ) (1400)
- Detica ( Guildford , UK ) (1,000)
- Getronics ( Amsterdam , Netherlands ) (28,000)
- Ikonami ( London , UK ) (35)
- Indra ( Madrid , Spain ) (8,300)
- LEXTA Consultants Group ( Berlin , Germany ) (35+200)
- LogicaCMG ( London , UK ) (30,000)
- PA Consulting Group ( London , UK ) (3,050)
- Pentalog ( Orléans , France ) (70)
- Outsourcing , delegation of internal non-core operations to external entity
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