Adani Group, controlled by India’s richest man Gautam Adani, is seeking to borrow about $1.5 billion to help finance its expansion into data centers, according to people familiar with the matter. AdaniConneX Pvt., a joint venture with data center operator EdgeConneX, is in talks with lenders including DBS Group Holdings Ltd., First Abu Dhabi Bank PJSC and Mitsubishi UFJ Financial Group Inc. for the offshore facility, the people said, asking not to be identified discussing private information.