The document outlines the process and benefits of Conversion Rate Optimization (CRO) for startups, emphasizing a scientific method to improve website performance. It details steps like planning, investigating user behavior, ideating solutions, experimenting with A/B tests, and collating results, illustrated by a case study on Transfercar that successfully increased conversion rates through systematic changes. The author, Espen Grimstad, advocates for data-driven decision-making to optimize user experience and gain substantial ROI.