An Addendum is a supplementary document that is added to an existing agreement or contract to modify, clarify, or add terms or conditions to the original document. It serves as an extension or amendment to the original agreement, providing additional details or addressing changes that have occurred since the agreement was initially executed.

Addendums are used to address changes or updates to an existing contract without having to rewrite the entire agreement. They can clarify ambiguous terms, add new provisions, or modify existing terms.

The content of an addendum can vary depending on the nature of the changes being made. It typically includes a description of the changes, the effective date of the changes, and any other relevant details.

Addendums are legally binding documents and should be executed with the same formalities as the original contract, such as signatures from all parties involved.