A more thorough explanation:

Definition: An apostille is a certification provided under the Hague Convention for authenticating documents used in foreign countries. It is a standard way of verifying the authenticity of a document so that it can be accepted in another country.

Example: If you are planning to study abroad, you may need to get your academic transcripts apostilled so that they can be accepted by the foreign university. Similarly, if you are getting married in another country, you may need to get your birth certificate apostilled so that it can be recognized by the foreign government.

These examples illustrate how an apostille is used to verify the authenticity of a document so that it can be accepted in a foreign country. Without an apostille, the document may not be recognized as valid, which can cause problems when trying to study, work, or travel abroad.