The more complicated question is what the collaboration looks like! Plain text in whatever shared plain text format you like for editing.
The best slide decks still come out of Keynote, with PowerPoint in second place. Working on a separate slides and then having one person being design / final layout with some copy editing.
Keynote and PPT can be shared directly in Dropbox or Google Drive or whatever for the syncing part.
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The more complicated question is what the collaboration looks like! Plain text in whatever shared plain text format you like for editing.
The best slide decks still come out of Keynote, with PowerPoint in second place. Working on a separate slides and then having one person being design / final layout with some copy editing.
Keynote and PPT can be shared directly in Dropbox or Google Drive or whatever for the syncing part.