What is the primary emphasis of the Spiral model?

The primary emphasis of the Spiral model is risk management. This model was specifically designed to accommodate high risk projects. It allows for multiple iterations, or loops, throughout the development of the project, with each loop addressing a different risk.

Here are the steps:

1. Identify Objectives: The first step in the spiral model is to identify the objectives for that iteration and the constraints that may affect the project.

2. Identify and Resolve Risks: The next step is to identify any potential risks that could affect the project. Once these risks are identified, strategies are developed to resolve them.

3. Development and Testing: After the risks have been addressed, the development and testing phase begins. This includes both the creation of the software and the testing to ensure it meets the project requirements.

4. Planning: The final step in the spiral model is planning for the next iteration. This includes reviewing the results of the current iteration and planning the next loop of the spiral.

The spiral model continues to loop through these steps for each iteration until the project is completed.