Singapore-based Princeton Digital Group has raised over $500 million in an equity investment round led by Abu Dhabi state fund Mubadala. PDG is a data center operator which has presence and operations in China, Singapore, India, Indonesia, and Japan. Mubadala led the round by putting in $350 million, while existing partners Warburg Pincus and Ontario Teachers’ Pension Plan Board also invested, thus taking the total exceeding half a billion dollars. “We are thrilled to be the lead investor in PDG’s fundraiser and partner with the company on its growth journey,” said Khaled Abdulla Al Qubaisi, CEO at Mubadala. Rangu Salgame, co-founder, chairman and CEO of PDG added: “Mubadala’s track record of long-term investments combined with extensive know-how in the digital infrastructure space makes it a great partner as we continue to scale our business.”