StackBuilder turns a plain-English description of your system into a professional cloud architecture diagram in seconds — no dragging boxes. Type "a 3-tier web app on AWS with an ALB, ECS Fargate, RDS Postgres, S3 and CloudFront" and it draws it with the real provider icons. What's different: • Description → diagram, not a blank canvas • Refine in plain English ("add a Redis cache") • AWS, Azure, GCP, Kubernetes, Databricks & multi-cloud • Export to PNG, SVG, PDF, draw.io — no signup