--- title: Lifecycle Modeling Organization description: LMO is the organization behind the Lifecycle Modeling Language. Communicate cost, facilitate understanding, & expedite development with our simple ontology. image: https://www.lifecyclemodeling.org/hubfs/Save%20the%20Date%20(800%20x%20400%20px).png --- [Skip to content](https://www.lifecyclemodeling.org#main-content) [![Lifecycle Modeling Organization Logo](https://www.lifecyclemodeling.org/hs-fs/hubfs/Landscape_Orange-Oct-26-2022-02-09-17-3170-PM.png?width=915&height=300&name=Landscape_Orange-Oct-26-2022-02-09-17-3170-PM.png)](https://www.lifecyclemodeling.org?hsLang=en) - The Organization Show submenu for The Organization - [Meet Us](https://www.lifecyclemodeling.org/meet-us) - [Volunteer](https://www.lifecyclemodeling.org/volunteer) - [Membership](https://www.lifecyclemodeling.org/memberships) - Resources Show submenu for Resources - [LML Specification](https://www.lifecyclemodeling.org/specification) - [Downloads](https://www.lifecyclemodeling.org/downloads) - [Updates](https://www.lifecyclemodeling.org/updates) - [Contact Us](https://www.lifecyclemodeling.org/contact) Open main navigation Close main navigation - The Organization Show submenu for The Organization - [Meet Us](https://www.lifecyclemodeling.org/meet-us) - [Volunteer](https://www.lifecyclemodeling.org/volunteer) - [Membership](https://www.lifecyclemodeling.org/memberships) - Resources Show submenu for Resources - [LML Specification](https://www.lifecyclemodeling.org/specification) - [Downloads](https://www.lifecyclemodeling.org/downloads) - [Updates](https://www.lifecyclemodeling.org/updates) - [Contact Us](https://www.lifecyclemodeling.org/contact) # Lifecycle Modeling We are the developers and maintainers of the Lifecycle Modeling Language (LML). [LML Specification](https://www.lifecyclemodeling.org/hubfs/LML%20Specification%20v2.0.pdf?hsLang=en) ## LML Leads Languages ### Communicate Cost A language that effectively communicates and reduces the cost of design. ### Facilitate Understanding A simple ontology with common graphical notations that makes design make sense. ###  Expedite Development Enables rapid product development to match pace with information technology. ## Lifecycle Modeling Language LML is a simple ontology with common graphical notations that puts the data back into systems engineering. [Why LML?](https://www.lifecyclemodeling.org/why-lml-lifecycle-modelign-language?hsLang=en) ![LML_logo-white](https://www.lifecyclemodeling.org/hs-fs/hubfs/LML_logo-white.png?width=700&height=262&name=LML_logo-white.png "LML_logo-white") ## LML Is Designed for the Whole System Lifecycle The Lifecycle Modeling Organization (LMO) develops and maintains an open-source modeling language that is structured and behavioral. LML provides a simple way to understand and communicate cost, schedule, and performance design information to all stakeholders in a standard manner. LMO trains and educates members on how to effectively use the lifecycle modeling methods, including LML and the Lifecycle Modeling Framework (LMF) to develop safer, more cost-effective systems and products. [View the LML Specification](https://www.lifecyclemodeling.org/specification?hsLang=en) [Visit Downloads to Learn More](https://www.lifecyclemodeling.org/downloads?hsLang=en) ## Traceability Through the Lifecycle Because LML was designed to simplify tracing requirements to their implementation mechanisms (Asset class entities), this is the primary path for traceability. Learn more about the Principal Entities and Relationships for Design LML Traceability in the LML Specification. [LML Specification](https://www.lifecyclemodeling.org/hubfs/LML%20specification%201.3%20(1).pdf?hsLang=en) ![traceability model (1)](https://www.lifecyclemodeling.org/hs-fs/hubfs/traceability%20model%20(1).png?width=551&height=533&name=traceability%20model%20(1).png "traceability model (1)") > "LML supports the full lifecycle: conceptual, utilization, support, and retirement stages. It integrates all lifecycle disciplines including program management, systems and design engineering, V&V, deployment, and maintenance into one framework. This is the language of the future." > > > > ![steven](https://www.lifecyclemodeling.org/hs-fs/hubfs/steven.png?width=100&height=100&name=steven.png) > > Dr. Steven Dam, LMO Steering Committee Member ## Get Involved Meet our team, join committees, and learn more about how LML is bringing the data back into modeling. ![membership](https://www.lifecyclemodeling.org/hs-fs/hubfs/membership.png?width=9765&height=1920&name=membership.png "membership") [Meet the Committee](https://www.lifecyclemodeling.org/meet-us?hsLang=en) [Learn About Volunteering](https://www.lifecyclemodeling.org/volunteer?hsLang=en) ![MBSE_CON_logo_final_01_blue-1](https://www.lifecyclemodeling.org/hs-fs/hubfs/MBSE_CON_logo_final_01_blue-1.png?width=500&height=290&name=MBSE_CON_logo_final_01_blue-1.png "MBSE_CON_logo_final_01_blue-1") ## The Model-Based Systems Engineering Conference Hosted by LMO This virtual conference explores all aspects of Model-Based Systems Engineering in a data-centric future. Answering questions on where does MBSE fit into the digital thread and how to get data out of models? [Members](https://www.lifecyclemodeling.org/memberships?hsLang=en) can request access to the MBSE-CON 2024recordings. [Learn more.](https://www.lifecyclemodeling.org/mbse-con?hsLang=en) --- [linkedin-in icon](https://www.linkedin.com/company/lifecyclemodelingorganization/) [Follow us on Facebook](mailto:info@lifecyclemodeling.org) Copyright © 2025 Lifecyclemodeling.org. All Rights Reserved.