Articles of Organization and Operating Agreements are both critical documents that relate to starting an LLC, but there are a few key differences between the two. Articles of Organization (also called Certificates of Formation) are an LLC formation document filed with the state to register your company as a legal business entity. If you form an LLC with Rocket Lawyer, we file this document on your behalf. An LLC Operating Agreement, on the other hand, is an internal document that outlines how the business will be run.