Have you scheduled a major event for your business or organization? Are you thinking of hiring a keynote speaker? If you have no experience with this sort of thing, you should watch the video and take the advice of the expert presenter in it.
The first thing the presenter emphasizes is the need to carry out extensive research. You may go to Google to find a speaker, but you will be better off asking colleagues who have hired event speakers for their recommendations.
When you have a list of names, you should interview and assess each speaker yourself. You should know whether or not your speaker is high-maintenance, whether they will make unreasonable demands or speak well beyond their allotted time. Even if your speaker is famous and can draw a lot of people, an overly egoistic speaker can ruin the entire event.
You should also ensure that the speaker can engage the audience for the allotted time and that their message will resonate with the people at your event. Ask to see a full unedited presentation of one of their events. If they do not have a video, you should not hire them. You now know what to look for when hiring a keynote speaker.