--- title: "How Ralph Wiggum Built a Serverless SaaS with Pulumi" url: https://daily.dev/posts/how-ralph-wiggum-built-a-serverless-saas-with-pulumi-mmvmbvmr3 source_url: https://www.pulumi.com/blog/how-ralph-wiggum-built-a-serverless-saas-with-pulumi/ type: article source: "Pulumi" published: 2026-01-14T18:08:34.510Z updated: 2026-01-14T18:09:02.838Z tags: ["ai", "aws", "serverless", "iac", "pulumi"] reading_time: 12 upvotes: 1 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How Ralph Wiggum Built a Serverless SaaS with Pulumi **[Pulumi](https://daily.dev/sources/pulumi)** · 12 min read · 1 upvotes · 0 comments ## Summary The Ralph Wiggum technique uses a simple bash loop to continuously re-prompt AI coding assistants like Claude Code, preventing them from stopping prematurely. By feeding the same prompt repeatedly, the AI iterates on the project until completion, making it particularly effective for infrastructure-as-code projects with clear success criteria. A demonstration shows Claude autonomously building a complete serverless URL shortener SaaS on AWS using Pulumi, including DynamoDB, Lambda functions, API Gateway, S3, CloudFront, and a polished React frontend with end-to-end testing via Playwright. The approach works well for greenfield projects and proof-of-concepts but requires detailed prompts and shouldn't be used unsupervised on production infrastructure. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#ai](https://daily.dev/tags/ai), [#aws](https://daily.dev/tags/aws), [#serverless](https://daily.dev/tags/serverless), [#iac](https://daily.dev/tags/iac), [#pulumi](https://daily.dev/tags/pulumi) [View this post on daily.dev](https://daily.dev/posts/how-ralph-wiggum-built-a-serverless-saas-with-pulumi-mmvmbvmr3)