Speaking on the importance of metrics and their depiction in businesses, Tim Cook, CEO of Apple Inc., insightfully noted, "You can't manage what you can't measure". In today's dynamic business world, Dashboard Design plays a crucial role in Management Strategy, enabling executives to visually comprehend complex data and make informed decisions.

Picture this: Your company houses large volumes of data, yet concise insights remain elusive to Operations, Finance, Sales—across the board. This is where effective Dashboard Design comes to the rescue, serving as an integral cog in Strategic Management. Properly designed dashboards act as a compass in the high seas of complex data—guiding executives to relevant insights and promoting informed decision-making. Hence, the purpose of a dashboard is more than just an aesthetic presentation of metrics—it should be a powerful tool for Strategic Management transformation.

Designing a dashboard is not just about cramming data onto a screen. There are key principles worth considering while developing a high-impact dashboard.

1. Data Relevance: Ensure only pertinent data is showcased on the dashboard. Irrelevant data muddles the dashboard purpose and can lead to indecisive action.
2. User-centric Design: Align dashboard design with user needs and understanding. Make it intuitive and easy to navigate, while maintaining a degree of customization.
3. Data Visualization: Use clear and appropriate graphical representations that highlight data trends and outliers, catering to the maximum "at-a-glance" capability.
4. Data Timeliness: Feature real-time or near real-time data to allow for rapid response and action.

Strategic dashboard design falls under three broad categories: Operational Dashboards, Tactical Dashboards, and Strategic Dashboards. Here are some best practices related to each.

• Operational Dashboards: These dashboards primarily monitor operations in real-time. They should be dynamic, reflecting changes promptly to impact immediate decision-making. Operational Dashboards are valuable for roles demanding swift action, such as Risk Management or shipping planners.
• Tactical Dashboards: Often used among middle management, these explicit dashboards reflect specific goals or KPIs. They provide the line of sight to a team's performance vis-à-vis its targets. Building these dashboards require careful consideration of metrics that truly reflect the performance and outcomes of the team.
• Strategic Dashboards: Intended for C-level executives, these dashboards depict a high-level overview of the organization's performance. They focus on long-term strategic goals and major KPIs. Strategic Dashboards must balance detail with brevity, allowing for a snapshot-like summary of crucial elements in the Strategy Development process.

Another important aspect of Dashboard Design is 'Dashboard Parity'. Simply put, this refers to the degree of agreement between what the dashboard portrays and the actual performance of the organization. There lies the possibility of dashboards painting an overly positive or negative picture of the state of affairs in the organization due to faulty data input or misinterpretation. 'Dashboard Parity' is, therefore, pivotal for maintaining the trustworthiness and credibility of dashboards.

In the era of Digital Transformation, dashboards are evolving. Artificial Intelligence (AI) and Machine Learning (ML) are reshaping dashboard design. Predictive Analytics and Natural Language Processing (NLP) are enabling more intuitive and interactive interfaces, in line with constant Innovation in modern businesses. In the future, we will witness dashboards that not only reflect what happened in the past but also predict outcomes, facilitating proactive decision-making.

Bottom line, the design of a useful dashboard is more than an exercise in aesthetics—it's a fundamental pillar of effective Change Management and Strategic Planning. It requires a user-centric approach combined with an understanding of the business, culture, and strategic goals to provide C-level executives with vital insights to drive business transformation.