One of the biggest mistakes a SaaS company can make is thinking they can sell to everyone, which ultimately means you sell to no one. At the cornerstone of your go-to-market strategy is the important decision of who you are going to sell to and how.
This is an excellent resource helping B2B SaaS startups think about how they are approaching their market. The matrix forces startups to assess who they are looking to target, at what price points and via what channels. A highly recommended read. @alangleeson