ESTA, an abbreviation for Electronic System for Travel Authorization, is an essential document for individuals traveling to the United States by sea or air. Specifically, ESTA is an authorization that permits the holder to travel to and through the United States while cruising. Without this approval, cruise-goers risk being denied entry at the port of departure.
Introduced in 2009, ESTA streamlined the pre-travel authorization process, allowing citizens of 38 countries to apply online and obtain authorization within seconds. ESTA's relevance stems from its role in enhancing border security, facilitating travel, and boosting tourism.