To try and bring Journey into your world - your upcoming presentation is likely a live meeting with slides? Totally guessing, but we'll go with that. Perhaps you wanted to send attendees a teaser prior to the meeting which included some voiceover context + your slides or a typeform questionnaire to collect questions prior to the meeting so you know what content to include or touch on (this can all be done via a pre-meeting Journey) or perhaps after you give your presentation, you want to follow up with all attendees on the next steps perhaps recapping the meeting, clarifying people's questions that you didn't have time to cover on in the meeting via videos, and then offering your calendar for a follow up discussion (this can all be in a "follow up" Journey). Usually people send long emails with multiple links/attachments in pre-meeting or post-meeting touches, Journey brings this in one link and makes it easily share-able, regardless of the types of content you're looking to share.
Good luck on the preso!