Cloud hosting uses a network of virtual servers that draw resources from multiple physical servers. This setup allows for easy scaling since resources can be added or removed as needed. If one server fails, another takes over. This means better uptime and reliability.Traditional hosting relies on a single server. In shared hosting, multiple websites share the same server resources, which can lead to slower performance. In dedicated hosting, your site has its own server. This gives you better performance but at a higher cost. Scaling usually requires upgrading to a different server or plan.