<ul><li>The article highlights the implementation of an auto-scaling infrastructure using Terraform. The infrastructure is highly available, fault-tolerant, and scalable, capable of adapting to changing traffic demands while ensuring cost efficiency, high availability, reliability, enhancing user experience, enabling future-proof scalability, and adhering to security-first design protocols.</li><li>The article focuses on the implementation of various infrastructure modules, including Root, VPC, Launch Template and Security Groups, Load Balancer and Auto Scaling Groups, and Monitoring and Alerts.</li><li>The article provides a detailed explanation of each module configuration, highlighting the features and strategies employed for each component.</li><li>The article further delves into troubleshooting and resolving the 502 Bad Gateway error, which presented a challenge due to the architecture's security-first design. The resolution involved implementing AWS Systems Manager for secure instance management, validating user data scripts, and testing configurations with spot instances before production deployment.</li></ul>

From 502 to 200: Building a Auto-Scaling Infrastructure with Terraform

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