A go-to-market strategy (GTM strategy) is the strategy you use to get your first customers after you launch your minimum viable product (MVP).
After you talk to your customers, you should have clear details on:
Once you have conducted market research, your GTM strategy should target the marketing channels that you have the highest confidence the channel will give you, the highest impact, for the least amount of effort.
Your go-to-market strategy (GTM strategy) is the strategy you use to get your first customers, until you have established product-market fit with your product. This may include a product launch plan, testing your messaging, and testing your marketing channels. Your marketing strategy is about investing more into the promotion channels that are working.