Why we build web apps on serverless, and what it means for your bill

When a client asks for something with logins, bookings or data, we build it on serverless infrastructure. The word is unhelpful, so here is what it means for you.

The old way

You rent a server. It runs all day whether you have a thousand customers or none, and you pay the same. When you get busy, it falls over unless you rented a bigger one.

The serverless way

The cloud provider runs your code only when something happens: a booking, a login, a page request. You pay per event, in fractions of a penny. Quiet months cost almost nothing. Busy days scale on their own.

What it means in practice

• Running costs close to zero until you have real users.
• No server to patch, reboot or outgrow.
• Backups and security handled at the platform level.

We use this for every product we run ourselves, which is why we are comfortable putting client projects on it. It is not the right fit for everything, and we will say so when it is not.