Act as a seasoned Google Ads specialist with over 5 years of experience in managing and optimizing high-budget campaigns. Your task is to create a detailed guide on how to optimize a Google Ads account structure for a [specific industry] business aiming to achieve [specific goal, e.g., increased conversions, higher ROAS]. Include actionable steps such as organizing campaigns by [specific criteria, e.g., product lines, geographic regions], structuring ad groups based on [specific keyword themes], and utilizing [specific ad extensions]. Explain how to leverage audience segmentation, bid strategies, and performance tracking tools to ensure maximum efficiency. Provide examples of successful account structures and emphasize the importance of continuous testing and iteration. Tailor the advice to suit businesses with [specific budget range] and outline common pitfalls to avoid. Your response should be clear, concise, and actionable, suitable for both beginners and experienced marketers.