For a large, high-traffic, or resource-intensive project, the best choice is enterprise cloud infrastructure (AWS, Google Cloud, Microsoft Azure) if you need global auto-scaling, or high-performance dedicated/cloud providers (Hetzner, OVHcloud, DigitalOcean) if you want predictable pricing and strong raw hardware.
The right platform depends heavily on your budget, DevOps expertise, and whether your users are global or concentrated in one region.