ESTA which stands for Electronic System for Travel Authentication is a system used by US government to determine if travelers are eligible to enter the US. To enter the US under the Visa Waiver Program you are required to submit an ESTA application.

To submit ESTA application or to check your status of application check out the ESTA site.

If you have questions about ESTA we recommend you to check Frequently Asked Questions about the Visa Waiver Program (VWP) and the Electronic System for Travel Authorization (ESTA)