Sina App Engine (SAE) is the earliest and largest PaaS platform for cloud computing in China.

SAE is dedicated in providing stable, effective web deployment and hosting service for those corporations, organizations and independent developers.

[citation needed] It mainly caters to the Chinese population around the globe, Sina stated that it has about 94.8 million registered users[citation needed] and more than 10 million active users engaged in their fee-based services (10,000 of whom are overseas Chinese in North America).

[citation needed] In November 1998, SRSNet (Stone Rich Sight Information Technology Ltd), the most visited internet portal site in China, established by Wang Zhidong [zh] and Wang Yan in 1996, merged with Sinanet, a web site for American Chinese community, created in California by Hurst Lin, Ben Tsiang [zh], and Jack Hong in 1995.

[10] After the merger, Sina maintained its dominant position as the most visited portal site in Mainland China over its major rivals Sohu and NetEase,[10] two other web-based companies in China, especially through its fast, continuous, and comprehensive online news services covering a vast range of worldwide events, such as the United States bombing of the Chinese embassy in Belgrade in 1999.

[11][10] Sina was the first to be approved for listing on the Nasdaq stock market on 13 April 2000, through a variable interest entity (VIE) based in the Cayman Islands, followed by NetEase and Sohu in June and July respectively.

[12][10] The Cyberspace Administration of China reprimanded Sina in 2015, accusing the online portal of having "distorted news facts, violated morality and engaged in media hype.

"[13] On 16 April 2018, the CAC launched an investigation into the news portal for alleged inclinations to factual errors and failure to curtail vulgar and explicit content.

On January 13, 2004, Sina and Yahoo started to jointly provide online auction services in China;[19] in response to this, EachNet (Chinese: 易趣網), which cooperates with eBay, lowered its registration fee in early February 2004 in order to keep its market share.

In every localized website, there are over thirty integrated channels, including news, sports, technology information, finance, advertising services, entertainment, fashion, and travel.

Many celebrities from mainland China, Taiwan and also Hong Kong use Sina's Microblog as a platform to reach out to their fans and supporters.

In addition, the news from sina comes from local newspapers, which in the case of mainland China are themselves subject to censorship by the government.