Network monitoring != SLA monitoring
It's labelled clearly and the webcast topic is clearly SLA monitoring, but for some duff reason the author (and the Editor?) allow the Network Monitoring to be written.
SLA monitoring is much much more than network monitoring. When monitoring networks, it's about pings, traceroutes, and other technological wonders. But SLAs require you to watch the end-to-end statistics. So, it can be a complex combination of ping, application specific tests, and also other difficult things like understanding network topologies and failover statuses to produce a magic number. For example, if the customer has a High Availability cluster that's providing protection from downtime, is the SLA affected if 30% of the nodes are lost? Is the SLA 95% met? Or is it still at 100%?