Dubai (Arabic: دبي Dubay) is the most populous city in the United Arab Emirates (UAE) and the capital of the Emirate of Dubai.Located in the eastern part of the Arabian Peninsula on the coast of the Persian Gulf, Dubai aims to be the business hub of Western Asia. It is also a major global transport hub for passengers and cargo.A centre for regional and international trade since the early 20th century, Dubai’s economy relies on revenues from trade, tourism, aviation, real estate, and financial services