Most Node.js projects don't fail at scale.

They fail before they get there...

Not because of bad code.

Because of bad structure.

I've seen teams rebuild entire backends after 6-12 months,

simply because the architecture couldn't evolve.

The common mistake?

Jumping straight into microservices.

Yes, microservices scale well.

But they also multiply:

• deployment overhead

• debugging complexity

• coordination cost

Before you need any of that.

A modular monolith gives you the upside without the chaos.

One codebase.

Clear boundaries.

Isolated modules.

You get:

• better developer experience

• simpler testing

• easier refactorings

• a clean path to microservices later

If a module needs to break out, it already knows how.

That's the part most people miss.

I wrote a practical breakdown on how to structure a Node.js app

using the modular monolith approach:

thetshaped.dev/p/how-to…

Most teams don't need microservices.

They need discipline.