Digital transformation solutions company UST on Wednesday opened a new office here, saying it will double the headcount from 2,000 to 4,000 in the city in the next 2-3 years. The 1,18,000-square-feet facility, with the provision of more expansion in the future, will accommodate over 2,000 UST employees and act as a centre for innovative research and development in emerging technologies such as Artificial Intelligence (AI), Machine Learning (ML) and IoT.