The Stepping Stone to the Top of the World
Cho Oyu (8,188m) is often called the 'easiest' 8,000er. Climbers use it to test their body's reaction to the Death Zone before attempting the Mount Everest summit.
It gets you into the 8,000m zone. If you can function here, you have a chance on Everest. It tests your gear, your stomach, and your mind.
Cho Oyu has low objective danger (fewer avalanches/crevasses) compared to Everest. It allows you to focus on the physiology of altitude without the terror of the Khumbu Icefall.
From the summit of Cho Oyu, you get a stunning view of the Mount Everest summit. It inspires you for the next big challenge.
Summiting Cho Oyu proves you belong at altitude. It is the best resume builder for an Everest expedition.