- The main objective of Rapid Application Development is to avoid extensive pre-planning, generally allowing software to be written much faster and making it easier to change requirements.
- Rapid Application Development Model (RAD Model) is a linear sequence of the software development process model where we focus a very short development cycle by using a component based construction approach.
- When organizations adopt rapid development methodologies, care must be taken to avoid role and responsibility confusion and communication breakdown within the development team, and between the team and the client.
- To facilitate rapid development, strong emphasis was placed on the idea of software re-use. The notion of software components began to be nurtured.
ADVANTAGES
- It increases speed of developing software. It can be achieved using methods like rapid prototyping, virtualization of system related routines, the use of CASE tools and other techniques.
- Re-usability of components help to speed up development.
It increases the quality. - Some systems also deliver advantages of interoperability, extensibility, and portability.
It incorporates short development cycles. - Promotes strong collaborative atmosphere and dynamic gathering of requirements.
DISADVANTAGES
- Unknown cost of product.
- Difficult to commit the time required for success of the RAD process.
- Short iteration may not add enough functionality, leading to significant delays in final iterations.
- Early RAD systems faces reduced scalability occurs because a RAD developed application starts as a prototype and evolves into a finished application.
- Early RAD systems have reduced features that occur due to time boxing, where features are pushed to later versions in order to finish a release in a short amount of time.
- Dependency on strong cohesive teams and individual commitment to the project.
