What responsibilities did the grand vizier have in the Ottoman government?

The grand vizier served as the absolute representative of the sultan in the Ottoman Empire, acting as the primary intermediary between the sovereign and the subjects. As an insignia of this authority, the grand vizier held the sultan's signet ring.1

His core responsibilities and powers included:

• Executive Authority: He functioned as the chief minister, overseeing the administration of the state.1
• Governance: By 1654, the grand vizier operated from the Sublime Porte, which became the effective center of government, shifting administrative focus away from the palace.1
• Council Leadership: Beginning in the 19th century, he presided over the council of ministers appointed by the sultan.1
• Cabinet Appointments: Following 1908, the grand vizier gained the authority to appoint cabinet ministers.1

While he was supported by "dome viziers"—who assisted him, commanded armies, and acted in his stead during military campaigns—the grand vizier's actual influence often fluctuated depending on the strength and involvement of the reigning sultan.1