Time to First Byte: What It Is and Why It Matters
CSS Wizardry
AUGUST 7, 2019
The reason is because mobile networks are, as a rule, high latency connections. This is why serving your content from a CDN is so important: even in the internet age, being geographically closer to your customers is advantageous. Armed with this knowledge, we can soon understand why TTFB can often increase so dramatically on mobile.
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