Which term describes the phase of the software development lifecycle where a product is transformed into a new system?

The phase of the software development lifecycle where a product is transformed into a new system is accurately described as deployment. During this stage, the software that has been developed and tested is actually released to users and placed into the operational environment. This phase involves activities such as installation, configuration, and activation of the system for use.

Mobilizing a completed product into a live environment is critical, as it signifies the transition from development to real-world implementation where the system needs to function effectively for its intended users. This involves ensuring that all components are integrated, performing necessary data migrations, and often includes user training and support to ensure that stakeholders can utilize the software effectively.

Although development refers to the earlier stage where coding and building the software occurs and maintenance is focused on updates and bug fixes post-deployment, these terms do not accurately depict the crucial step of actually rolling out the system for active use. Testing is a preliminary phase that ensures the product meets quality standards before deployment, but does not involve the transformation and actual application of the software in a live setting. Thus, deployment is the correct terminology for this phase where the new system comes into play after being developed and tested.