Amazon Web Services , the world’s largest cloud provider, resolved the issues that plagued its services for about 15 hours on Monday, an episode that highlighted how much of the internet is dependent on the operations of a single company.

In an update on its service health dashboard, the Amazon.com Inc. unit said all of its services “returned to normal operations” as of about 6 p.m. New York time.

AWS services — data storage, computing power, and other building blocks — underpin a large chunk of the internet, accounting for about a third of the cloud market.

Downdetector tracked disruptions at hundreds of sites, including for financial services outfits Venmo and Robinhood Markets Inc., Apple Inc.’s music and TV offerings, software companies such as Zoom Communications Inc., Salesforce

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