For many years, NORAD has been providing “Santa Claus tracking service” to netizens through web browser, so that we can know when the virtual “reindeer train” circled and landed. However, the Santa Tracker service in 2020 has been cut off by Microsoft azure cloud service. < / P > < p > last year, NORAD’s Santa tracking website attracted about 15 million visitors. This year, however, Microsoft has sent 25 engineers to “escort” Santa’s tracker service. < / P > < p > – the website will answer “Santa is taking all necessary precautions to ensure that gifts are safely delivered to everyone.”. It is reported that due to the popularity of covid-19, many people have turned to telecommuting / online teaching, and a large number of Microsoft employees are no exception. In this context, Microsoft engineers are still working hard with NORAD to build a Santa Claus tracking service website and chat robot for it in 2020, said Susan Sullivan, senior project manager of azure. Spontaneous combustion at a Guangzhou Motor vehicle intersection and other traffic lights in Shenzhen

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