An approved plan for a project, plus or minus approved changes. It is compared to actual performance to determine if performance is within acceptable variance thresholds. Generally refers to the current baseline, but may refer to the original or some other baseline. Usually used with a modifier (e.g. cost performance baseline, schedule baseline, performance measurement baseline, technical baseline). A snapshot; a position or situation that is recorded. Although the position may be updated later, the baseline remains unchanged and available as a reminder of the original state and as a comparison against the current position. Products that have passed their quality checks and are approved are baselined products. Anything ‘baselined’ should be under version control in configuration management and ‘frozen’, i.e. no changes to that version are allowed.