
      <h2>Introduction</h2>
      <p>Most performance issues don’t come from bad code — they come from lack of constraints. Performance budgets introduce discipline into development.</p>
      <hr />
      <h2>What Is a Performance Budget?</h2>
      <p>A performance budget defines: Page weight limits, Load time targets, JavaScript execution thresholds.</p>
      <hr />
      <h2>Why Performance Budgets Matter</h2>
      <ul>
        <li>Better user retention</li>
        <li>Improved SEO</li>
        <li>Lower infrastructure costs</li>
        <li>Happier teams</li>
      </ul>
      <hr />
      <h2>Metrics That Actually Matter</h2>
      <p>I focus on: LCP, TTFB, CLS, INP. And explain how they tie to real user experience.</p>
      <hr />
      <h2>Enforcing Budgets in CI/CD</h2>
      <p>Performance should be tested like code: Automated checks, Lighthouse CI, Failing builds when limits are exceeded.</p>
      <hr />
      <h2>Final Thoughts</h2>
      <p>Performance is not an optimisation phase — it’s a product feature.</p>
    

Why performance is a product feature, not an optimization phase. Learn how to set and enforce performance budgets in your development workflow.

Performance Budgets: The Missing Discipline in Modern Web Development

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