BENGALURU: After a hiatus, there's now a rise in multi-billion dollar deals in IT services. These involve both asset and people takeovers from the customer, and the objective is to cut costs. The top four Indian IT firms - TCS, Infosys, Wipro and HCLTech - collectively booked deals worth nearly $20 billion in the June quarter, with TCS accounting for about half of that. A good part of that has come from large deals. Managements of top IT firms have called out several mega deals in recent weeks.Infosys...