Here COPE stands for Create Once, Publish Everywhere methodology that is used to publish our content on different platforms such as website, AMP site, email apps, etc., by having a single source of truth for all of them. You can understand the single source of truth as the practice of structuring information models and associated data schema in such a way that every data element is stored in one place. Implementing the COPE strategy helps us in reducing the amount of work that we have to do for publishing our content on different platforms. Creating content that can work everywhere is not a trivial task since each platform will have different requirements. Read more on https://bit.ly/35OGzSd