Engineering Change Order System or ECOS is a business system designed to manage and document changes to engineering documentation. It ensures that all of the stakeholders are notified of any proposed changes and that each change request is written, evaluated and approved in accordance with pre-defined organizational guidelines. ECOS offers an efficient way to stay organized and up-to-date on the latest versions of engineering drawings and documents while eliminating errors caused by outdated information. Moreover, it provides an easy way to trace discussions and progress on a particular issue, making it ideal for tracking modifications over time. With an effective ECOS in place, organizations can make sure their operations are always running at peak performance.