Types of Incremental Model

  1. Staged Delivery Model
  2. Parallel Development Model

1. Staged Delivery Model

Construction of only one part of the project at a time. 

Staged Delivery Model

2. Parallel Development Model

Different subsystems are developed at the same time. It can decrease the calendar time needed for the development, i.e. TTM (Time to Market) if enough resources are available. 

Parallel Development Model

Incremental Process Model – Software Engineering

The Incremental Process Model is also known as the Successive version model. This article focuses on discussing the Incremental Process Model in detail.

Table of Content

  • What is the Incremental Process Model?
  • Phases of incremental model
  • Requirement Process Model
  • Types of Incremental Model
  • When to use Incremental Process Model
  • Characteristics of Incremental Process Model
  • Advantages of Incremental Process Model
  • Disadvantages of Incremental Process Model

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What is the Incremental Process Model?

First, a simple working system implementing only a few basic features is built and then that is delivered to the customer. Then thereafter many successive iterations/ versions are implemented and delivered to the customer until the desired system is released....

Phases of incremental model

Requirements of Software are first broken down into several modules that can be incrementally constructed and delivered....

Requirement Process Model

...

Types of Incremental Model

Staged Delivery Model Parallel Development Model...

When to use the Incremental Process Model

Funding Schedule, Risk, Program Complexity, or need for early realization of benefits.  When Requirements are known up-front.  When Projects have lengthy development schedules.  Projects with new Technology.  Error Reduction (core modules are used by the customer from the beginning of the phase and then these are tested thoroughly). Uses divide and conquer for a breakdown of tasks.  Lowers initial delivery cost.  Incremental Resource Deployment.   Requires good planning and design.  The total cost is not lower.  Well-defined module interfaces are required....

Characteristics of Incremental Process Model

System development is divided into several smaller projects. To create a final complete system, partial systems are constructed one after the other. Priority requirements are addressed first. The requirements for that increment are frozen once they are created....

Advantages of the Incremental Process Model

Prepares the software fast. Clients have a clear idea of the project. Changes are easy to implement. Provides risk handling support, because of its iterations. Adjusting the criteria and scope is flexible and less costly. Comparing this model to others, it is less expensive. The identification of errors is simple....

Disadvantages of the Incremental Process Model

A good team and proper planned execution are required. Because of its continuous iterations the cost increases. Issues may arise from the system design if all needs are not gathered upfront throughout the program lifecycle. Every iteration step is distinct and does not flow into the next. It takes a lot of time and effort to fix an issue in one unit if it needs to be corrected in all the units....