Model Granularity

Model granularity refers to the level of detail at which a planning model captures and organizes data. This detail can be applied across various dimensions, such as time (annual, quarterly, monthly, daily), organizational structure (company, division, department, employee), products (category, SKU), or geography (country, region, city).

The appropriate level of granularity is a critical choice in designing a planning model. A model with low granularity (e.g., annual revenue by country) is useful for high-level strategic planning but lacks the detail needed for operational management. Conversely, a model with very high granularity (e.g., daily sales by individual product in each store) provides deep insights but can become complex, slow, and difficult to maintain.

Finding the right balance is essential for effective business planning. The ideal level of granularity aligns with the specific decisions the model is intended to support, ensuring that plans are both strategically sound and operationally actionable without creating an unnecessary maintenance burden.