Life cycle phases consist of various separated modules with defined functionalities. Life cycle phases describe the various phases of project management. Life cycle phases are mainly divided into two broad categories:
1. Engineering Phase 2. Production Phase
These are explained as following below.
1. Engineering Phase: Engineering phase involves establishing the goal and defines the overall scope of the project. Engineering phase involves the small team size and it is usually less predicted. Engineering phase is further divided into 2 Phases: Inception Phase, and Elaboration Phase. 
- (i). Inception Phase – Inception Phase involves establishing goals and gathering the requirements needed for the software development. It involves the cost estimation and identifying the risk factors. In the inception phase, we mainly work on the scope of the project and architecture. Feasibility analysis is also an important part of the inception phase.
- (ii). Elaboration Phase – Elaboration phase involves in-depth evaluation and study as well as establishing the strong architecture and infrastructure. In the elaboration phase, we work on the efficiency of our architecture. In this phase, we also analyze use cases and other software diagrams. We reduce the risk to a certain extent and a preliminary user module is prepared in this phase.
2. Production Phase: In the Production phase, we mainly focus on the Implementation of Project and optimization including the reduced cost and risk factors of our project. It also involves various testing for efficient deployment of the project. It involves the large team size and most of the time it is predictable. It is broadly divided into 2 Phases: Construction Phase, Transition Phase. 
- (i). Construction Phase – In the construction phase, we perform the implementation of our software. In this phase, we minimize the risk and eliminate it. All the features and components are integrated into an application. In this phase, we perform strict testing and process optimization is done. We minimize the development cost and work to improve its efficiency.Construction phase mainly focuses on the implementation and testing of our software.
- (ii). Transition Phase – In the Transition phase, we perform strict testings mainly beta testing and deployment of software or project. After receiving the feedback from the user, we perform some changes in our software to make it more efficacious. In this phase, the developer works on a project with an user’s view to make software more supportable and user friendly.
