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Development20 January 20267 min read

Serverless Architecture: Pay for What You Use (Not for Idle Air)

A 24/7 server burns money. Serverless (AWS Lambda, Vercel) means you pay only for the milliseconds your code actually runs.

Serverless Architecture: Pay for What You Use (Not for Idle Air) — article illustration

Imagine keeping your car engine running 24/7 just in case you need to go to the store. That’s traditional hosting (VPS). Serverless is like Uber. The car arrives when you need it and you only pay for the ride. In 2026 no startup should pay for an idle server.

Scale to zero

Website traffic is spiky. At night it’s zero. During a campaign it’s a thousand. A regular server crashes when load spikes (or you overpay so there’s extra capacity). Serverless scales automatically. If needed, 1000 instances spin up. If there’s no traffic, it shuts everything down (“scale to zero”). Bill: €0.

Edge functions: speed at the speed of light

Your code no longer lives in one data center in Frankfurt. Vercel or Cloudflare Edge Functions mean the code runs on the physically closest server to the user (e.g. Tallinn). Result: latency is negligible (<50ms).

Cold start problem:

Because the server “sleeps,” the first request wakes it up (about 200–500ms). Solution: keep critical functions warm (provisioned concurrency) or use lightweight languages like Go or Rust (or well‑optimized JavaScript).

FAQ: Serverless

Is it complicated? +

For developers — yes (it changes the mindset). For owners — no. For you it’s simply a lower bill and a faster site.

Is it suitable for WordPress? +

No. Serverless fits modern JAMstack sites (React, Vue, Next.js). WordPress needs a persistent database connection and filesystem, which makes serverless hard.

Why pay for empty?

We’ll move your business to a modern and efficient infrastructure.

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SIA DESIGN

Design and web development

The SIA DESIGN team writes practical guides on web design, development and SEO.

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