What is a visa invitation letter and how can it be obtained for international travel purposes?

A visa invitation letter is a document that invites someone to visit a country for a specific purpose, such as tourism or business. It is typically issued by a host in the destination country and is used to support a visa application. To obtain a visa invitation letter, the host must provide personal information, details about the visit, and sometimes proof of accommodation or financial support. The letter should be submitted along with other required documents when applying for a visa at the embassy or consulate of the destination country.