As web performance testers, we regularly see subtle technical issues cause substantial failures in website user journeys -we expect the expected.

Whether in 24/7 monitoring, when our multi-user-journey approach routinely highlights that all areas of a web site may be functioning fine, apart from the one crucial  journey, maybe CheckOut: or Add to Basket.

Or if we’re running a web load test, it can sometimes result in a a whole site stalling: fortunately this normally happens only for brand new sites being load tested well before say a Christmas rush *.