As of July 2021, Walmart had 20,000 outlets in 28 countries. It remains the world's largest retailer, with Amazon accounting for more than half of all sales. While it is not a new company, it was created in 1962 and has stepped up its technical efforts, ushering in a slew of new entrants into the field. It's also one of the most data-driven companies, with data-driven decision-making allowed in boardrooms.
It started building the world's largest private cloud in 2021, capable of processing 2.5 petabytes (2500Tb) of data each hour. To deal with this massive data, it has also developed a Data Café analytics center in its Bentonville, Arkansas headquarters. This hub can transform, display, or use almost 200 internal and external data sources, as well as 40 petabytes of transactional data, to construct models. The firm has been able to spot trends and make faster decisions by decreasing the time it takes to crunch data from weeks to minutes, reducing the time it takes to apply data efficiently.................
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