I agree about boring tech. They're not a tech company but they're not low or anti tech though
Tesco worked closely with a data startup to create the Clubcard and that startup is now a big company owned by Tesco (Dunnhumby, £350m, 2,000 employees)
They were the first supermarket to do online grocery delivery
They had Nokia apps for groceries on 2009, iPhone in 2010
Huge supply chain automation
Tesco Labs etc