Vercel Build Failure: Static Generation Failed

1. Page uses dynamic data without generateStaticParams() or ISR revalidation
2. Data fetching fails during build (external API down, database unreachable)
3. generateStaticParams() returns incomplete or invalid parameter combinations
4. Page uses dynamic elements (new Date(), random, user locale) without proper hydration handling
5. Revalidation time set too low, causing build timeout waiting for revalidation

Use dynamic rendering: For pages that need server-side rendering, add:
export const dynamic = 'force-dynamic'

Implement ISR: For pages needing periodic updates:
export const revalidate = 3600 (revalidate every hour)

Use generateStaticParams: For dynamic routes, export function returning params:
export async function generateStaticParams() { return [{id: '1'}, {id: '2'}] }

Handle build-time errors: Wrap data fetches in try/catch, provide fallback data if external services fail.