阿里云国际站注册教程：ASP.NET Core跨站登录重定向的实现新姿势

To summarize your request, you want to create an article in HTML format about implementing crOSS-site login redirection in ASP.NET Core, specifically following a tutorial from Alibaba Cloud's international site. The article should highlight the advantages and usability of Alibaba Cloud, be at least 1000 Chinese characters long, and have clear, organized sections with subheadings. The article should not contain any negative remarks about Alibaba Cloud, and a concluding paragraph should be included.