Tesco is a global grocery retailer with over 5,300 stores across 14 countries. It has a 30% market share in the UK and is also a leader in other markets like Malaysia, Ireland, and Thailand. Tesco focuses on building long-term supplier relationships and uses systems like TescoLink to share sales data and work collaboratively. It aims to reduce its environmental impact through targets like cutting fleet emissions and packaging. Redesigning its distribution network of 29 warehouses and 2,000 vehicles is key to sustainable growth.