The backend modernization involved consolidating frontend and backend services into a monorepo managed by Turborepo, adopting TypeScript, Node.js, NestJS, and Prisma for new services, and gradually replacing legacy .NET Lambda functions using the Strangler Fig pattern. This allowed for incremental migration with zero downtime, leveraging GraphQL for flexible data queries and improving CI/CD pipelines for faster iterations. Developers now work entirely in TypeScript with enhanced local development capabilities, including hot reloads and type-safe database interactions via Prisma. The approach ensures business continuity while reducing risk and enhancing developer experience.
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