Web Development•8 min read

Authentication in Next.js Using NextAuth (Full Implementation)

Scaleup Infotech Team

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Feb 28, 2026

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Authentication in Next.js Using NextAuth (Full Implementation)

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This guide gives a simple overview of authentication in next.js using nextauth (full implementation). If you need help turning the idea into a website, app, or business system, the related Scaleup Infotech services are listed below.

Setting up NextAuth

NextAuth.js handles session management for you without needing a complex backend.

typescript

// app/api/auth/[...nextauth]/route.ts
import NextAuth from "next-auth"
import GoogleProvider from "next-auth/providers/google"

const handler = NextAuth({
  providers: [
    GoogleProvider({
      clientId: process.env.GOOGLE_CLIENT_ID,
      clientSecret: process.env.GOOGLE_CLIENT_SECRET,
    }),
  ],
})

export { handler as GET, handler as POST }