1 PAGE.
I have 10+ years experience in Marketing, both in Corporate and Startups and I believe every document should be 1 page max, with some appendix if needed, but the key messages always should hold on 1 page. It will force the right discipline of making choices and define a clear priority setting.
Now, being concise is hard. I can help you with that :)
Looking forward talking to you,
Serena
