Create an SEO friendly and user friendly URL structure and navigation for a new website
Design a comprehensive URL architecture and navigation system for a full website based on [TOPIC], [KEYWORD], [BUSINESS TYPE], and [EXISTING URL] in [LANGUAGE]. Structure all sections and categories in a logical hierarchy, featuring the Home page as the primary level followed by increasingly specialized subpages. In cases where an existing URL is provided, incorporate it for both main and subdomain addresses. Include a concise purpose statement for each section to clarify its function. Implement optimal linking strategies and SEO methodologies to enhance Google rankings, while developing a search-user-friendly architecture that delivers valuable, informative content. Final deliverables must be presented exclusively in English.