A more thorough explanation:

Definition: Articles of amendment are a legal document that a corporation files to make changes to its articles of incorporation.

Example: If a corporation wants to change its name, add or remove a director, or change its business purpose, it must file articles of amendment with the state where it is incorporated.

Explanation: Articles of amendment are necessary when a corporation wants to make changes to its original articles of incorporation. These changes can include anything from changing the company's name to altering its business purpose. By filing articles of amendment, the corporation is notifying the state and its shareholders of the changes being made. This ensures that the corporation is operating legally and transparently.