When speaking to a group of people, a skilful introduction (intro) by someone other than the presenter really helps to get the “show on the road”.
But what about a good outro?
The outroducer, who is usually the same person as the introducer, can add tremendous value by briefly recapping some of the main points of the presentation, perhaps add some humour and show appreciation. They key is “briefly”. A long outro can put a dampener on what was a good talk. A concise “to the point outro can round it off beautifully.
The keys are: Briefly summarise a few select key points, add some wit, and show appreciation. Always be sincere and enthusiastic, but don’t overdo the flattery.