Cloud Spending Optimization at Coupang

This post outlines how Coupang's finance and engineering teams collaborated to manage and optimize cloud expenditure. A Central team was formed to focus on three principles: budget allocation, savings, and sustainability. Initially, challenges included lack of understanding of cloud efficiency among engineering teams and insufficient analytics for leadership. The Central team initiated collaboration with domain teams to optimize cloud usage through various strategies, such as using AWS Spot Instances and ARM-based AWS Graviton. Key initiatives included instance generation alignment, EMR optimization, and efficient storage management in Amazon EBS and S3. By automating resource launches and rightsizing EC2 resources, Coupang achieved significant cost reductions. The ongoing effort aims to enhance analytics tools and automate monitoring processes for continuous improvement in cloud cost efficiency.