There are various types of visas, each serving a specific purpose for travelers attending events like the Dubai Property Expo or other international gatherings. A tourist visa allows individuals to visit a country for leisure or sightseeing, while a business visa permits travel for work-related activities, including attending real estate expos and networking events. A student visa is granted to those pursuing education abroad, whereas a work visa allows individuals to be employed overseas, often requiring employer sponsorship. A transit visa is for short layovers before continuing to another destination. Diplomatic or official visas are issued to government officials on duty. Permanent residency or immigrant visas enable individuals to settle in a foreign country, while dependent or spouse visas allow family members to join the primary visa holder. Each visa type has specific eligibility requirements and durations, varying by country.