Great list, Sushma! Since you're focusing on search visibility and performance, I'd highly recommend looking into Server-Side Rendering (SSR). Using frameworks like Next.js is a game changer for business sites because it handles SEO far better than standard client-side React by delivering pre-rendered HTML to crawlers.
Also, don't forget to prioritize Core Web Vitals, especially Cumulative Layout Shift (CLS). A high-performance site isn't just fast; it must be visually stable for a great UX. Looking forward to your research!