Spiral model is one of SDLC model which is useful to develop application in organised way.
Sprial model is iteration of more than one waterfall model. It means we devide application in small modules.
Follwoing steps will be follow in spiral model
1. We gather requirement for the module
2. We design the module and get approval from the client
3. We implement the module
4. We test that module
5. We deploy that module
6. We will plan for next module and go to step1 for next module.
The above steps will be followed for all the modules while whole application will not complete.
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