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In the recent past, we have observed a trend that edge devices are increasingly accessing computational resources through the Internet, preferably via cloud computing technologies. However, cloud servers fail to meet the desired latency requirements of low-latency applications like augmented reality, cognitive assistance, and Tactile Internet applications, primarily due to the high-transmission latency from edge devices. This issue is resolved by augmenting cloud networks with a cloudlet enabled edge computing solution that creates a three-tier network topology. In this paper, we primarily focus on static cloudlet network planning problem and propose a hybrid cost-optimization framework for optimal cloudlet placement over existing passive optical access networks, subject to capacity and latency constraints. We formulate a mixed integer non-linear program to identify ideal cloudlet placement locations over urban …