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I Built a Full-Stack B2B Marketplace in 3 Days With V0, Next.js 16, and Vercel's AWS Integration — Here's What Actually Happened

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The honest account: what worked, what broke, and what I'd do differently. Three days. One B2B Dutch-auction marketplace. Here's the realistic version of what building with V0, Next.js 16 App Router, Aurora PostgreSQL, and DynamoDB actually looks like when you're going fast. This is not a "look how smooth AI coding is" post.

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I Built a Full-Stack B2B Marketplace in 3 Days With V0, Next.js 16, and Vercel's AWS Integration — Here's What Actually Happened · ShortSingh