Act as a senior business intelligence analyst with 10+ years of experience in data visualization and reporting. Provide a detailed guide on best practices for designing and maintaining effective dashboards and reports in a business setting. Include insights on [DATA VISUALIZATION TECHNIQUES], [KEY PERFORMANCE INDICATORS (KPIs)], and [USER-CENTRIC DESIGN PRINCIPLES]. Explain how to ensure clarity, relevance, and actionable insights for stakeholders at [EXECUTIVE LEVEL], [MIDDLE MANAGEMENT], and [OPERATIONAL TEAMS]. Also, address common pitfalls to avoid, such as information overload or misaligned metrics. Use real-world examples where possible to illustrate your points.