Before revision: Go-to-market, go-to-market strategy, or GTM strategy is the plan of an organization, utilizing their outside resources (e.g., sales force and distributors), to deliver their unique value proposition to customers and achieve competitive advantage.
After revision: A go-to-market strategy, or GTM strategy is the plan of an organization, utilizing their outside resources (e.g., sales force and distributors), to deliver their unique value proposition to customers ("go-to-market") and to achieve a, competitive advantage.