The lead time is the time between when a product is ordered, and when it is received and available. The meaning of the term can differ slightly depending on the agent or organisation involved. Procurement lead time is the time between when the order is placed and when the goods are received in the country. For a health facility, the lead time is the time between when the request for stock is placed with the central medical store in the country, and when the goods are received at the facility.

A logical framework is a dynamic planning and management tool that makes logical correlations between the main elements of a program and project design and helps ensure that an intervention is likely to achieve measurable results.