Having worked on client and agency side I have delivered complex decks for pitching, C-Suite updates, Board Meetings and the like for companies such as Apple, Intel, GE, PepsiCo, Unilever, Danone, J&J, Pharma, Fast Foods, Luxury, Auto - the key element in any acceptable deck is a "story", which is built upon as the deck progresses. Redundant information and pure descriptions/padding are ditched in favour of a tight narrative with a clear communication goal in mind. This takes experience to tailor a high quality response to the client brief.
* Please note this is not a design service. I can arrange design to your brief at at extra costs.