Broadly, IT services firms bundle a range of services, including cloud, automation, business analytics and cybersecurity, under the digital head.
Most IT services firms report revenues for Digital and Core services. The latter includes support and maintenance of legacy systems such as mainframes. Digital accounts for over 35 percent of revenue and for some firms, including Birlasoft, it is 40-45 percent of their overall revenue.
While the Digital portion is growing, revenues from Core or Legacy, still the major chunk of business, is coming down.