Even as the blooming IT start-ups with their young and cheerful set up are producing results better than big corporate giants, these huge IT houses are trying out their own techniques and venturing into fresh areas now-a-days.

These old and well-known firms are doing what would have been considered blasphemous a less than a decade ago - holding coding marathons to develop new fixes and arranging "commando" units for resolving clients' IT issues within hours.

IT giants like Infosys and Wipro, which bloomed in the 1990-2000 decade are now facing a significant slump in growth due to these start-ups. The growth has decreased by more than half.

With evolving client demands, India's $147 billion IT outsourcing industry is also witnessing evolution. The clients from varying sectors like telecoms, retail and banking wish for more than an outsourced help desk. They demand ranges from solving a server crash overnight to aid in building an app, opine industry veterans.

"When people around you change, moving from a very process-defined model to a much more agile model, it is definitely making a dent in everyone's thinking," says Sanjiv Kovil, Wipro's chief technology officer.

In face of such competition, Wipro has established small "commando force" units that help arrive at swift solutions by replicating a startup environment where small teams work faster.

"It is not the wild west - there is a method to the madness. We have kind of defined the boundaries, but within that we have allowed for a lot of flexibility," Kovil stated.