The scalability of your software or app should always be a consideration when developing your software or app.
At the beginning, it's fine to have a few bugs and things going wrong as the app is mainly being used by a small group.
At that stage, the tolerance level for mistakes is much higher.
For most saas it's important to always build your app with Scalability in mind which means paying extra for things like testing and QA in order to future-proof your product and business.
