With the use of webinars and webcasts you can reach thousands of employees all over the world. But if all these employees watch a live webinar or webcast at the same time via an internal network, you have to have the capacity and the bandwidth to facilitate a smooth connection.  If not enough is available, chances are the image quality is low or there is no image available at all. This is common problem within organizations is called a ‘spike’ or a ‘peak’ due to the strain on the network.