Wednesday, 04 Oct, 2023




Amazon EC2 Locations for Spot Pricing - A Hierarchical Clustering Approach

International Journal of Distributed and Cloud Computing

Volume 9 Issue 1

Published: 2021
Author(s) Name: Veena Khandelwal and Shantanu Khandelwal | Author(s) Affiliation: Department of Computer Science and Engineeing, SRM Institute of Science and Technology, India.
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EC2 provides cloud services through several regions and availability zones. Spot instances are offered by Amazon EC2 through spot pricing. Amazon launched it simplified spot pricing model at Reinvent: 2017. The prices change less frequently now and are more predictable. To ensure availability, spot instances can be acquired from diversified locations. The biggest concern to the user is the identification of regions and availability zones to choose for optimizing cost and maximizing availability. The study attempts to find similarity in cost per instance among different EC2 locations according to Ward’s Hierarchical Clustering Algorithm. The analysis uses past 60 days history traces from last week of September to November 2019 of four different compute instance types across all Amazon EC2 regions and availability zones. Results suggest a significant amount of similarity in terms of cost of instance in spot pricing across different locations. This raises user’s confidence in adopting spot market.

Keywords: Amazon EC2 regions, Availability zones, Hierarchical clustering, Spot instances.

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