How does server-side rendering improve the SEO performance of a weather application displaying dynamic data?

Server-side rendering (SSR) improves the SEO performance of a weather application displaying dynamic data primarily by making the content readily indexable by search engine crawlers. 'SEO' stands for Search Engine Optimization, which is the practice of improving a website's visibility in search engine results pages (SERPs). 'Server-side rendering' is a technique where the initial HTML of a web page is generated on the server, rather than in the user's browser. In contrast, client-side rendering (CSR) relies on JavaScript to fetch data and render the page in the browser. Search engine crawlers, like Googlebot, are programs that automatically crawl the web and index web pages. While modern crawlers can execute JavaScript, it is often less efficient and reliable than indexing pre-rendered HTML. When a weather application uses CSR, the initial HTML returned to the crawler may be minimal, containing only a basic structure and JavaScript code. The crawler must then execute the JavaScript to fetch the weather data and render the page, which can take time and resources. This can lead to the crawler not fully indexing the page's content, resulting in lower SEO rankings. With SSR, the server generates the complete HTML of the weather application, including the dynamic weather data, before sending it to the browser. The crawler receives fully rendered HTML that it can easily index. This makes it more likely that the page's content will be accurately indexed, leading to higher SEO rankings. For example, if someone searches for 'weather in New York City,' a weather application that uses SSR and includes the current weather conditions for New York City in its initial HTML is more likely to rank higher than an application that uses CSR and only renders the weather data after the JavaScript has executed. SSR also improves the initial load time of the application, which is another factor that search engines consider when ranking web pages. This is because the browser receives fully rendered HTML that it can display immediately, without waiting for the JavaScript to execute. This gives users a better experience and can improve SEO performance.