Buffer was founded in 2010 and is one of the most successful and well-known SaaS startups today. The team raised an initial USD $400K round of funding in 2010, which the used to grow the company up to a $60M valuation for the Series A financing in oct-2014. Early traction and cash flow positive were key variables to Buffer's success. You can find their article about it on their blog.
The deck below is a redesign of Buffer's original presentation, done by the team @ Slidebean. The content is the same, we just took the liberty of re-doing the slides using our pitch deck design templates.