Basic Test Knowledge-How does software get developed?

To get requirements from different roles, such as Top Management, Product Designer, Market Operator, Customer, Technical Member
When requirements passed the feasibility analysis will start to design
When then design get involved roles agreed, will start to develop.
When pass the baseline testing from the developer, will build to test environment to get the tested version
When passed the testing on the test, pre-production, and production environment, will exposure product to clients
Periodically collect the feedback for continuously improve or big change for new business strategy.