The Industrial Disputes Act, 1947, is a Central Act for the purpose of investigating and settling industrial disputes between workmen and employers, workmen and workmen, or employers and employers in connection with employment, non-employment, or the conditions of labor of any person. Therefore, it would be applicable to every establishment or activities analogous to industry.
Information technology or software services are activities carried out through the employment of individuals with the required technical qualifications. Hence, such establishments would certainly come under the purview of the Industrial Disputes Act, 1947.