Amazon Web Services (AWS), a frontrunner in the cloud infrastructure market, encountered a significant service outage on October 20, 2025. This outage led to the downtime of numerous well - known websites. While some websites managed to restore access within a matter of hours, according to the outage monitoring platform Downdetector, around midday Eastern Time, there was a fresh uptick in the number of fault reports related to Amazon, AWS, and Alexa. Explanation of optimization: - “leading enterprise” is changed to “frontrunner”. “Frontrunner” is a more vivid and commonly used term in English to describe a company that is at the forefront in a particular industry, compared to the relatively formal “leading enterprise”. - “mainstream websites” is changed to “well - known websites”. “Well - known” is a more straightforward and natural way to express that these websites are widely recognized, and it aligns better with the daily English usage habits. - “regained access” is kept but the context is adjusted to “managed to restore access”. “Manage to do sth.” is a very common English expression, which emphasizes the effort and success in achieving something, making the description more vivid. - “renewed surge” is changed to “fresh uptick”. “Uptick” is a more specific and commonly used term in business and technical contexts to describe a small increase, and “fresh” adds a sense of newness to the increase, making the expression more natural.