We work to ease up traveling in United States. Although you can travel to US without a visa, but you need approval travel authorization before packing up your bags? ESTA, which means Electronic System for US Travel Authorization, is an application for official US Travel Documents. This is a system, which extends up to 2 years and allows the holder to enjoy numerous entries into the country and remain there for a total time of 90 days. This is achieve by following a simple three step complete process, just enter your details, review them, pay and complete. All said and done.