The demographic that SaaS caters to is very niche. They fulfil a very specific need of other businesses or customers with their software. While the essence of SEO still holds true for SaaS companies, a lot of activities need strategic thinking and planning.

For one the B2B sales cycle is remarkably short and you need higher velocity in your sales process. The greatest asset that SaaS companies have is their content and to market it right, with the most strategic keywords and link-building SEO works differently.