The phase in the DSDM process used to review the success of the deployed solution in the operational environment is the Post-Project phase. This phase involves evaluating whether the deployed solution has met its business objectives and delivered the expected benefits. It includes a benefits review to determine the extent to which the anticipated benefits have been realized and to identify any further actions needed to achieve these benefits fully.

The Post-Project phase focuses on reviewing the success of the deployed solution in the operational environment, assessing whether it has met the business objectives, and conducting a benefits review to evaluate the realization of the predicted benefits.

The process of Requirements Engineering is designed to ensure that requirements are carefully elicited, analyzed, and validated in a structured and rigorous manner. It involves evolving requirements from high-level business objectives down to low-level detailed specifications. This ensures that the final requirements are aligned with business needs and can be effectively implemented in the solution. The process typically includes several stages:

Requirements Elicitation: Gathering requirements from stakeholders through various techniques such as interviews, workshops, and observations.

Requirements Analysis: Refining and prioritizing the elicited requirements to ensure they are clear, complete, and feasible.

Requirements Validation: Confirming that the requirements accurately represent the stakeholders' needs and are feasible for implementation.

Requirements Documentation: Recording the requirements in a formal document to ensure they are communicated clearly to all stakeholders.

Requirements Management: Managing changes to the requirements as the project progresses.

The comprehensive process of Requirements Engineering ensures that requirements evolve from high-level objectives down to low-level detail, aligning with the needs and expectations of the business.

According to the MoSCoW technique, a 'Must Have' requirement is something that the project will fail without. These requirements are absolutely essential for the system to function and meet the business needs. If even one 'Must Have' requirement is not met, the project would be considered a failure. This prioritization ensures that critical functionality is delivered in the first increment and forms the basis of the minimum viable product (MVP).

The MoSCoW technique defines 'Must Have' requirements as mandatory and essential for the project's success, without which the system has no value.

In the KANO Model, the three distinct types of customer needs are:

Expected (Basic Needs): These are the fundamental requirements that customers expect to be met. If these needs are not fulfilled, customers will be dissatisfied.

Normal (Performance Needs): These are the needs that customers explicitly state and expect to be fulfilled. The better these needs are met, the more satisfied the customers will be.

Exciters (Delight Needs): These are the features that go beyond customer expectations and provide delight when fulfilled.

'Teasers (When)' is not a type of customer need in the KANO Model.

The KANO Model focuses on Expected, Normal, and Exciters needs to categorize customer requirements and satisfaction levels.

A Business Domain Model typically shows the following elements:

Classes: Represent the entities or objects in the business domain.

Associations: Describe the relationships between classes.

Multiplicities: Indicate the number of instances in a relationship between classes.

Actors, which represent roles played by users or other systems that interact with the system, are not typically shown in a Business Domain Model. They are usually depicted in Use Case Diagrams.

The Business Domain Model focuses on Classes, Associations, and Multiplicities to describe the structure and relationships within the business domain.