You are the Chief Data Officer of a fast-growing startup aiming to build a data-driven culture. Outline a step-by-step strategy to embed data-driven decision-making across all departments. Include [SPECIFIC METRICS] to track progress, [KEY STAKEHOLDERS] who need buy-in, and [COMMON PITFALLS] to avoid. Provide actionable insights on training programs, tool adoption, and leadership alignment. Your response should be detailed, practical, and tailored for a startup environment with limited resources but high growth potential.