Why did Venice and the Ottoman Empire compete for control of the Aegean Islands?

Venice and the Ottoman Empire competed for control of the Aegean Islands due to their strategic importance for trade and territorial expansion. Following the Fourth Crusade in 1204, Venice acquired a significant commercial empire in the eastern Mediterranean, including many Aegean islands like Crete. These islands served as valuable trading stations and fortified lookout posts.1

The Ottoman Empire's expansion into the region led to direct conflict with Venice. The Ottomans gradually conquered Byzantine territories, and by the 16th century, Venice's policy was largely dictated by the need to defend its heritage against the advancing Turks. This struggle included the loss of Cyprus in 1571 and Crete in 1669, though Venice managed to retain some strongholds and briefly regained territories like the Morea. The islands had checkered histories, with various powers including the Venetians, Genoese, Hospitallers, and Turks holding control at different times before eventual Ottoman incorporation.23