Türkiye offers many facilities concerning its visa policy. Visas can be obtained from Turkish Embassies abroad or at the airport. As the rules may often change, it’s wise to check regularly http://www.mfa.gov.tr/visa-information-for-foreigners.en.mfa to receive updated information.
E-visa is an endorsement allowing the bearer to enter Türkiye. This new type of visa replaces “sticker type of visa” issued at the border crossings. Please note that e-visas are only valid when the travel purpose is tourism or commerce.