Arm processors and architectures are gaining traction as development teams increasingly adopt them for various application infrastructures, including microservices and databases, due to their cost-effectiveness. CircleCI offers several options for utilizing Arm-based compute, including hosted execution environments and self-hosted runners. The tutorial demonstrates using Arm in CI/CD pipelines to build, test, and deploy applications, particularly focusing on deploying to AWS ECS clusters using AWS Graviton2 nodes and Terraform for infrastructure management. The pipeline configuration includes reusable commands for installing Terraform and managing AWS ECS clusters, with approval steps ensuring controlled execution. The tutorial highlights CircleCI's introduction of Arm-capable executors, enabling developers to leverage Arm architectures in their workflows, with all code examples available in a GitHub repository.