What matters
The aim is to connect the technology with everyday operational decisions. Web applications frequently read code, sessions, caches, logs and database files. When storage operations queue up, CPU may appear available while requests still feel slow. I/O limits and storage latency should therefore be considered alongside CPU and memory when diagnosing hosting performance.
This subject is more than a narrow technical detail. In real infrastructure, the application, server, network and external dependencies need to be considered together rather than as isolated components.
Why it matters in practice
For a website owner or hosting administrator, the value lies in turning technical information into concrete actions: timely updates, configuration review, monitoring, tested backups and reduction of unnecessary exposure.
No single control solves every problem. Resilience comes from multiple defensive layers, sensible isolation and operational procedures that have been tested before they are needed during a real incident.