The main sources of raising capital for SaaS include Pre-Seed Funding ($8.8 million raised by 40 SaaS startups in Q1 of 2021), Seed Funding ($174 million raised by 115 companies), Venture capital ($3,3 billion raised by 124 SaaS companies across the A, B, C Series), as well as Angel Investing, Venture Debt, and others.