Downtime is not uncommon for any website or provider. Many large enterprises, including Google, apple, Amazon and Microsoft, often encounter this situation. The reason is that temporary server errors are usually caused by human errors. < / P > < p > but today’s interruptions are of concern because the product portfolio of Google’s parent company alphabet is almost ubiquitous. Analysts say that this is an unprecedented failure for a system that has grown into one of the biggest drivers of traffic and activity on the Internet. < / P > < p > it is worth mentioning that Google’s search products are operating normally, and third-party advertising (Google’s main revenue source) is still visible in search results, indicating that advertising has not been affected. < / P > < p > in response to the disruption, the YouTube team said: “we know that many of you are now having problems accessing youtube, and our team is aware of and investigating the problem. We will update you as soon as we have more information. ” < / P > < p > in addition to Google’s own services, the popular mobile game Pokemon go has also been affected, probably because you need to log in to your Google account to log in to the game. < p > < p > in November last year, Amazon’s cloud computing unit suffered a outage, affecting about 24 services, including roku, a software vendor, and Flickr, a digital photo service. Didi Qingju bicycle has entered 150 cities