"The National Maritime Domain Awareness Architecture Plan describes a process for sharing maritime information. To provide the appropriate level of detail and technical specificity to the full spectrum of readers, the document is divided into multiple sections. They include:  Executive Summary. The 'Executive Summary' is for senior leaders who want an overview of the plan. It summarizes major concepts and business processes.  Concept. The 'Concept' is for mid-level managers and senior technical managers who need to understand, with some detail, the objectives, features and business processes of the plan.  Framework. The 'Framework' is for technical managers or technology implementers who need to understand, with greater detail, the technical implementation and specifications of the plan.  Appendices. The 'Appendices' are a collection of architectural and technical documents which are relevant to, but not otherwise included in, the National Maritime Domain Awareness Architecture Plan. Each appendix represents the state of the technology, process or definition at the time this plan was published.  Attachments. The 'Attachments' are a collection of documents that describe the National Information Exchange Model -- Maritime (NIEM-M) at the time this plan was published. While NIEM- M is not part of the plan, the definition of common data standards is integral to the success and implementation of this plan."
Maritime Information Sharing Environment [MISE]: https://mise.mda.gov/