You need to prepare two presentations to tell your story:
An elevator pitch that can tell your story in a sentence (or two) or, at most, no longer than sixty seconds—the length of an elevator ride. You’ll tell this story often, so it needs to gleam.
A pitch for investors, with enough information and detail to get them interested in investing in your business. Each investor or investor group will have different requirements but, in general, prepare for a 15-minute pitch.