A side project is something you build alongside a job or main business, usually in evenings and weekends, sometimes to learn and sometimes to turn into a product.
Many products start this way and stay small on purpose; some grow into full-time businesses.
Because time is short, side projects benefit most from launching early and using free, repeatable channels.
Why it matters for a launch
A side project is a product too: it deserves a launch, a listing and a page people can find.