Act as an experienced SEO content strategist with expertise in content modularity and its impact on search rankings. Analyze how breaking down content into reusable, interchangeable modules can improve [WEBSITE PERFORMANCE], [USER ENGAGEMENT], and [SEARCH ENGINE VISIBILITY]. Provide actionable recommendations for structuring modular content, including best practices for [TOPIC CLUSTERS], [INTERNAL LINKING], and [SCHEMA MARKUP]. Highlight case studies or examples where modular content led to measurable SEO gains, such as increased [ORGANIC TRAFFIC] or [DWELL TIME]. Address potential challenges, like maintaining consistency across modules, and suggest tools or workflows to streamline the process.