Gartner defines midsize enterprise (MSE) as those organizations that have between $50 million and $1 billion in annual revenues and/or 100 to 1000 employees. This is a vendor driven segmentation scheme and segmenting midsize enterprises by revenues or number of employees is arbitrary. Midsize enterprise is a term essentially born out of a process of elimination — it refers to the organizations that are neither Global 2000 enterprises nor small businesses.