Billionaire Mukesh Ambani's children -- Isha, Akash and Anant, on Monday were appointed on the board of his energy-to-technology conglomerate Reliance Industries Ltd, in what is seen as a clear path of succession planning at India's most valuable company.

The board of Reliance met ahead of the company's annual general meeting to approve the appointment of twins Isha and Akash as well as Anant, as the "non-executive directors of the company," the firm said in a stock exchange filing.