UK ETA for Short Stay refers to the Electronic Travel Authorisation required for eligible visitors entering the United Kingdom for short-term visits. It is designed for tourism, business meetings, family visits, and transit purposes. The UK ETA for Short Stay allows multiple entries during its validity period, typically two years or until the passport expires. Each visit usually permits stays of up to six months, subject to immigration approval at the border. Applicants must apply online before travel and receive approval electronically linked to their passport. It does not guarantee entry, as border officers make the final decision upon arrival.