User adoption, often equated with onboarding, is the process by which new users become familiar with and choose to continue using a product or service, driven by the product's ability to help them achieve their goals. High user adoption rates are crucial for companies as they indicate effective user acquisition and retention, leading to greater efficiency and growth, including benefits like lower cost-per-acquisition, higher retention, and improved marketing ROI. The success of user adoption hinges on balancing the perceived value of the product against the effort required to use it, with companies employing strategies to enhance value or reduce effort, such as offering promotions, improving product features, and adhering to familiar design conventions. For more complex software, like SaaS, careful planning and support are necessary, and measuring adoption success involves setting goals, selecting metrics, developing a tracking plan, and implementing and assessing changes through methods like A/B testing. Ultimately, user adoption strategies enable businesses to align user goals with company objectives, fostering long-term product success and profitability.