# How Neptune Built a Fast, Serverless Backend with Neon and Vercel

DevFeed: [How Neptune Built a Fast, Serverless Backend with Neon and Vercel](<https://devfeed.tech/articles/how-neptune-built-a-fast-serverless-backend-with-neon-and-vercel-5689.md>)

Original publisher: [Read original article](<https://neon.com/blog/neptune-built-a-fast-serverless-backend-with-neon-and-vercel>)

Author: Taraneh Dohmer

Published: 2025-08-13T15:51:15Z

Content type: article

Language: en

Sources: [Blog -- Neon Docs](<https://devfeed.tech/sources/blog-neon-docs.md>)

Topics: [Back end](<https://devfeed.tech/topics/backend.md>), [Serverless](<https://devfeed.tech/topics/serverless.md>), [Vercel](<https://devfeed.tech/topics/vercel.md>), [Next.js](<https://devfeed.tech/topics/next-js.md>), [migration](<https://devfeed.tech/topics/migration.md>), [TypeScript](<https://devfeed.tech/topics/typescript.md>), [Git](<https://devfeed.tech/topics/git.md>), [Databases](<https://devfeed.tech/topics/databases.md>), [Google Cloud Platform (GCP)](<https://devfeed.tech/topics/google-cloud.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [case-studies](<https://devfeed.tech/tags/case-studies.md>), [database](<https://devfeed.tech/tags/database.md>), [git](<https://devfeed.tech/tags/git.md>), [infrastructure](<https://devfeed.tech/tags/infrastructure.md>), [migration](<https://devfeed.tech/tags/migration.md>), [next-js](<https://devfeed.tech/tags/next-js.md>), [serverless](<https://devfeed.tech/tags/serverless.md>), [typescript](<https://devfeed.tech/tags/typescript.md>), [vercel](<https://devfeed.tech/tags/vercel.md>)

## AI overview

Neptune built a fast serverless backend for its AI-powered prenup concierge using a Next.js application written in TypeScript, hosted on Vercel, with Neon as its primary database. Migrating from Google Cloud SQL to Neon took about an hour with zero downtime. Neon's serverless architecture and branching model reduce infrastructure overhead and provide isolated database environments connected to Vercel preview deployments.

## Source excerpt

Neptune is an AI-powered concierge that helps couples navigate high-stakes financial decisions, starting with prenups. Neptune guides couples through an emotionally intelligent process that replaces the guesswork and complexity of prenups (because most of us are not lawyers) and...