Amazon’s cloud computing service suffered a major outage in its eastern U.S. operations on the eve of Thanksgiving, hampering everything from web-connected security-camera services to software applications that businesses use. A variety of Amazon Web Services applications began to fail, including ones that deliver data and authorize users to access it. That hobbled companies that rely on AWS, including Amazon’s Ring security camera service, iRobot’s Roomba vacuum cleaner app, and the publishing systems of news outlets such as The Washington Post, which is personally owned by Amazon chief executive Jeff Bezos. AWS is the world’s largest provider of cloud-computing services, which let customers rent data storage and processing capabilities over the web instead of running their own datacenters. It has emerged as Amazon’s most profitable business.