Quick answer
Choose hosting based on peak concurrent work and cacheability, not only monthly visitor totals.
Separate cached from uncached traffic
CDN and full-page caching can absorb huge volumes of public traffic, while logged-in requests still execute PHP and database work.
Plan for peak concurrency
Launches, breaking news and campaigns can create short peaks far above the monthly average.
Recovery matters at scale
Backups, deployment rollback, observability and support response become more valuable as downtime cost rises.
Where Cloudways enters the decision
Cloudways Flexible supports deliberate vertical scaling and Cloudflare options; Autonomous is designed around automatic scaling for WordPress. The right route depends on whether demand is sustained or highly variable.