The insights were powerful, for the first time a retailer had insight into what their customers browsed and the behaviors that ultimately led to purchase.

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Back then it was about to embark on a programme of expansion and sales promotion that would turn it into the UK's most powerful retailer (by far).

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If a retailer is big enough and powerful enough, it can often dictate that new technology be used along the supply chain to work seamlessly with its own cutting-edge POS system.

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