Astro is strong for websites where content, speed, and search visibility are central: service pages, blogs, knowledge bases, case studies, and multilingual marketing sites. We review how much content stays the same between visits and which elements need to change for each user. That bases the technical choice on actual use.
A heavy web app with many logged-in users, real-time state, and server logic may fit a full application framework better. That is why we inventory interactions and integrations before the choice is made. For an Astro online store, we consider checkout and accounts separately rather than treating them as extra content pages.
To compare the options, read Astro or Next.js: which framework fits?.