1) Marketing is important for startups, but the approach needs to be calibrated to the business maturity. It should focus on building a brand and generating qualified sales leads. 2) When starting marketing, a startup needs to have clarity on the problem they solve and be able to supply their product/service in sufficient volume. They also need to understand their unique value proposition and competitive advantages. 3) Marketing should be treated as a process that is integrated with the overall business plan, with defined strategies, campaigns, customer data collection, and selection of appropriate marketing interventions.