- When working with presentations that need to be updated often, human voiceovers may be difficult or even impossible to use. By using text-to-speech, updating the voiceover for a presentation is as easy as editing text. - When working on multilingual material, we might not have the budget and the logistic possibility to get good speakers in all languages. With Text-to-speech we only need to get our text translated in the target languages, which is a much easier task. We might even adopt mixed solution (human voiceover for some languages, TTS for other languages). - When we need to be able to publish quickly and 24/7, text-to-speech is always available. - When we need to publish a large library of presentations, text-to-speech will be able to work faster than real-time, meaning that we can produce several hours of audio in just few minutes. - When we want to use several voice characters in our presentation, the complexity and the budget needed for a voiceover project might get Hollywood proportions. With Text-to-Speech using several voices is as easy as using only one voice. - Text-to-speech can also be used to build a prototype of a presentation, testing the script and the way pictures and words go together, before calling in a professional voiceover for the final take.