What are task regions in the Spiral model.
Customer communication - In this region it is recommended to establish customer communication.
Planning - All planning doings are performed in order to define resources timeline and other project related activities.
Risk analysis - The tasks need to calculate technical and management risks.
Engineering - In this task region, tasks needs to build one or more representations of applications are performed.
Construct and release - All the essential tasks required to construct, test, install the applications are conducted.
Customer evaluation - Customer's feedback is gathered and based on the customer evaluation necessary tasks are performed and implemented at installation stage.