Reliance Industries Limited is engaged in the activities of hydrocarbon exploration and production, petroleum refining and marketing, petrochemicals, advanced materials and composites, renewables, retail and digital services. The Company's segments include Oil to Chemicals (O2C), Oil and Gas, Retail, and Digital Services. The O2C segment covers refining, petrochemicals, fuel retailing, aviation fuel, and bulk wholesale marketing, with a portfolio that includes transportation fuels, polymers, polyesters, and elastomers. The Oil and Gas segment focuses on the exploration, development, and production of crude oil and natural gas. The Retail segment involves consumer retail and related services. The Digital Services segment provides a range of digital services. It also operates an oncology-focused healthcare platform, which focuses on technology-driven cancer care. Its subsidiaries include 7-India Convenience Retail Limited, Amante India Limited, Cover Story Clothing Limited, and others.