Engineering Change Orders (ECOs) are documents that document the change of a product’s design and structure. Every single detail is carefully scrutinized for accuracy and must adhere to industry standards and regulations. An ECO is designed to capture all changes being made, from small tweaks to massive overhauls, including cost and performance considerations. The ECO process also serves as a comprehensive audit trail that keeps track of any modifications made to the prototype or production product. In essence, Engineering Change Orders are a way of keeping everyone in the loop and ensuring product reliability and safety.