A Series B funding round is a stage of venture capital financing where a company raises capital to expand its operations and market reach after it has proven its business model and achieved initial success in the market. Typically, companies that have already secured Series A funding round and demonstrated significant growth participate in Series B rounds. These rounds involve larger investments than Series A and often attract venture capital firms seeking to invest in high-growth companies with strong potential. The funding is used to scale the business, hire key personnel, increase marketing efforts, and potentially acquire other businesses.