The Demak Sultanate was a Javanese Muslim state located on Java's north coast in Indonesia, at the site of the present-day city of Demak. A port fief to the Hindu-Buddhist Majapahit kingdom thought to have been founded in the last quarter of the 15th century, it was influenced by Islam brought by Muslim traders from China, Gujarat, Arabia and also Islamic kingdoms in the region, such as Samudra Pasai, Malacca and Bani (Muslim) Champa. The sultanate was the first Muslim state in Java, and once dominated most of the northern coast of Java and southern Sumatra.

Palembang is the capital city of the Indonesian province of South Sumatra. The city proper covers 352.51 square kilometres on both banks of the Musi River in the eastern lowlands of southern Sumatra. It had a population of 1,668,848 at the 2020 Census; the official estimate as at mid 2022 was 1,729,546. Palembang is the second most populous city in Sumatra, after Medan, and the twelfth most populous city in Indonesia.