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Performance
15 min.

Speed = Revenue: The High Cost of Latency

Milliseconds cost millions. We analyze why Core Web Vitals are the most important KPI for 2026 and how to calculate your 'Latency Tax'.

C
Coday Lead DevAuthor

The 100ms Rule

Amazon discovered it 10 years ago: Every 100ms of latency cost them 1% in sales. Today, users are even more impatient. If your site takes longer than 3 seconds to load, 53% of mobile users leave. They don't come back. Speed is not a 'nice to have'. It is the foundation of your revenue.
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Core Web Vitals: The New SEO Gold Standard

Google isn't guessing anymore. With Core Web Vitals (CWV), they measure exactly how annoying your site is. * **LCP (Largest Contentful Paint):** How fast does the main content load? * **INP (Interaction to Next Paint):** Does the site freeze when I click? * **CLS (Cumulative Layout Shift):** Does content jump around while reading? Fail these, and you disappear from Search.

The Performance Audit

Images are WebP/AVIF and lazy-loaded
Font files are subsets and preloaded
JavaScript is minimized and deferred
Server Response Time (TTFB) is under 200ms

"Performance is the most under-valued asset in the digital portfolio."

Google Webmaster Central

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C

Coday Lead Dev

Digital Expert at Coday. Shares insights on web design and performance.

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