Google is a Monorepo!
Don't rule out Monorepos
A lot of developers have a misconception and they believe that monorepos are gone and monorepos are not good for big companies.
They say that each project and each repository should be small with small lines of code and handle one particular thing in their whole company or their whole project.
But do you know who has the biggest monorepo in the whole world? It's Google.
At Google, they have one mono repo that has more than 86 terabytes of data, more than 2 billion lines of code, and more than 9 million source files.
So think again before you rule out monorepos for your project.