Matthew Machuga, lead analytics team at Auth0, recounts a recent deployment failure to a new AWS region due to Terraform's error message indicating an invalid number of nodes. The issue turned out to be a limitation in the specific AWS region, which was not yet available for that service. The team had to rewrite their infrastructure and made significant changes to their approach to avoid similar issues in the future, including increased investigation and planning ahead of time, tracking Amazon's release history, and using alternative technologies when necessary.