The introduction of a guest or speaker should be simple, functional and respectful. In the least, it should go something like, “I have the honor of introducing our speaker, Dr. John Brown, who comes to us from Brown University, where he is the Chief of Internal Medicine. Today he’s going to lecture on “the right way to lecture”.
However, no one does this. Instead most try to do more, usually with knowledge gaps, and end up delivering incomplete, awkward or bad introductions.
Introductions tend to either be awkward or great.