When it comes to the challenges with AWS CloudFormation, I faced a few challenges. One challenge is associated with large infrastructures; the template can become very long and hard to manage. Sometimes, the error messages during stack creation or update can be very hard to troubleshoot. Managing the correct order of resource creation and some updates can be tricky, especially with interdependent resources. If a stack update fails halfway and rolls back, it sometimes leaves the resources in an inconsistent state. AWS imposes a limit on stack size and the number of resources per stack, which can be quite constrained for large deployments. Despite all this, once we have experience, we can overcome these challenges very easily. Stack creation or updates can be slower than expected, especially with large and complex resources, and certain resource types or dependencies can add to the wait time. Nevertheless, AWS offers a way to optimize performance by breaking large templates into nested stacks. It's very capable, but there is room for improvement in speed.
