I would rate the scalability a nine out of ten. We use it every day.
AWS CloudFormation automates infrastructure deployment, offering cost efficiency and ease of use for managing infrastructure as code. It supports quick provisioning and benefits from features like versioning. Template reuse enhances efficiency; however, it lacks intuitive features compared to alternatives like Terraform and faces integration delays with AWS updates. Its code complexity, limited flexibility for advanced configurations, and AWS specificity can be limiting for multi-cloud operations.