The phrase "startup phase" refers to the early stage of a new business or project when it is being set up and established. It is the period where the initial groundwork, planning, and development take place. Full definition
Honest feedback is crucial in the initial startup phase of your business. (thecollegeinvestor.com)
We literally went through the whole startup phase on our own, meaning that we even went to buy and fix furniture of our first office on our own. (entrepreneur.com)
A common assertion upon the mouths of entrepreneurs at startup phase, that money is the sure bet for their success, is one that must be de-mystified. (timreview.ca)