Tesco is a large British multinational grocery retailer founded in 1919 operating in multiple countries. It has been a pioneer in online grocery shopping since the early 1990s. However, Tesco now faces challenges from competitors who are also developing their online services as customer shopping behaviors change with increased internet usage. The document discusses Tesco's SWOT analysis in the online grocery market and where the company should focus to continue its success online and protect its market share.