Reliance Industries owns Reliance Jio and is often India's largest listed company by market capitalization.
Reliance Industries began with Dhirubhai Ambani's textile business and was incorporated in 1973. It later expanded into petrochemicals, refining, oil and gas, telecommunications, retail, and digital services. The company is headquartered in Mumbai and is listed on India's major stock exchanges.
Reliance Jio Infocomm launched commercial 4G services in 2016. Its low-cost data plans rapidly changed India's telecommunications market and helped make mobile internet far more accessible. Reliance Retail is another major subsidiary, operating stores and digital commerce businesses.
The word “Reliance” can refer to the wider group, while Reliance Industries Limited is the publicly traded parent relevant to market-cap comparisons. Tata and Adani are separate Indian business groups, not alternative names for the same company.