SSD

Customer requirements

End-user requirements

Customer and end-user constraints on the conduct of verification and validation

Staffing level constraints

Engage relevant stakeholders using methods for eliciting needs, expectations, constraints, and external interfaces.

Transform stakeholder needs, expectations, constraints, and interfaces into prioritized stakeholder requirements.

Define constraints for verification and validation.

 Derived requirements with relationships and priorities

Service requirements

Service system requirements

Requirement allocations

Architectural requirements, which specify or constrain the relationships among service system components

Interface requirements

Skill level requirements

Develop requirements and express them in the terms necessary for service and service system design.

Derive requirements that result from solution selections and design decisions.

Establish and maintain relationships among requirements for consideration during change management and requirements allocation.

Prioritize derived requirements.

Allocate the requirements to logical entities, service system components, and other entities as appropriate.

Identify interfaces both external and internal to the service system.

Develop requirements for the identified interfaces.

Operational concepts and scenarios, use cases; and activity diagrams, user stories

Service system and service system component installation; training, operational, maintenance, support, and disposal concepts

Definition of required functionality and quality attributes

Architecturally significant quality attribute requirements

New requirements

Requirements defects reports and proposed changes to resolve

Assessment of risks related to requirements

Record of analysis methods and results

Develop operational concepts and scenarios that include operations, installation, development, maintenance, support, and disposal as appropriate.

Develop a detailed operational concept that defines the interaction of the service system, end users, and the environment, and that satisfies operational, maintenance, support, and disposal needs.

Establish and maintain a definition of required functionality and quality attributes.

Analyze requirements to ensure that they are necessary, sufficient, and balance stakeholder needs and constraints.

Validate requirements to ensure the resulting service system will perform as intended in the end user’s environment.

Alternative solution screening criteria

Selection criteria

Service system component selection decisions and rationale

Documented relationships between requirements and service system components

Documented solutions, evaluations, and rationale

Establish defined criteria for selection.

Develop alternative solutions.

Select the service system solutions that best satisfy the criteria established.

Service system architecture

Designs of service system components and consumables

Skill descriptions and details of the staffing solution (e.g., allocated from available staff, hired as permanent or temporary staff)

Interface design specifications and control documents

Criteria for design and service system component reuse

Results of make-or-buy analyses

Develop a design for the service system.

Ensure that the design adheres to allocated functionality and quality attribute requirements.

Document the design.

Design interfaces for the service system components using established criteria.

Evaluate whether the components of the service system should be developed, purchased, or reused based on established criteria.

Categories of interfaces with lists of interfaces per category

Table or mapping of interface relationships among service system components and the external environment

List of agreed interfaces defined for each pair of service system components when applicable

Reports from meetings of the interface control working group

Action items for updating interfaces

Updated interface description or agreement

Review interface descriptions for coverage and completeness.

Manage internal and external interface definitions, designs, and changes for service system components.

Implemented service system components

Training materials

User, operator, and maintenance manuals

Procedure descriptions

Use effective methods to implement the service system design.

Adhere to applicable standards and criteria.

Conduct peer reviews of selected service system components.

Perform standalone testing of service system components as appropriate.

Revise the service system as necessary.

Service system integration strategy with rationale

Documented and verified environment for service system integration

Service system integration procedures and criteria

Exception reports Assembled service system components

Assembled service system components

Interface evaluation reports

Service system integration summary reports

Staffing plans that show the sequence of where and when staff are provided 

Develop a service system integration strategy.

Ensure the readiness of the integration environment.

Confirm that each service system component required for integration has been properly identified, behaves according to its description, and that all interfaces comply with their interface descriptions.

Evaluate the assembled service system for interface compatibility, and behavior (functionality and quality attributes).

Lists of the service system components selected for verification and validation

Verification and validation methods for each selected component

Verification and validation environment

Verification and validation procedures

Verification and validation criteria

Select the components to be verified and validated and the verification and validation methods that will be used for each.

Establish and maintain the environments needed to support verification and validation.

Establish and maintain verification and validation procedures and criteria for selected service system components.

Peer review schedule

Peer review checklist

Entry and exit criteria for service system components and work products

Criteria for requiring another peer review

Peer review training material

Service system components selected for peer review

Peer review results, including issues and action items

Peer review data

Determine what type of peer review will be conducted.

Establish and maintain peer review procedures and criteria for the selected service system components and work products.

Define requirements for the peer review.

Establish and maintain checklists to ensure that service system components and work products are reviewed consistently.

Develop a detailed peer review schedule, including dates for peer review training and for when materials for peer reviews will be available.

Prepare for the peer review.

Ensure that the service system component or work product satisfies the peer review entry criteria and make the component or work product available for review to participants early enough to enable them to adequately prepare for the peer review.

Assign roles for the peer review as appropriate.

Conduct peer reviews on selected service system components and work products, and identify issues resulting from the peer review.

Conduct an additional peer review if the defined criteria indicate the need.

Ensure that exit criteria for the peer review are satisfied.

Record and store data related to the preparation, conduct, and results of the peer reviews.

Analyze peer review data.

Verification results and logs

Verification reports

Analysis report (e.g., statistics on performance, causal analysis of nonconformance, comparison of the behavior between the real service system and models, trends)

Trouble reports

Change requests for verification methods, criteria, and the environment

Perform verification of selected service system components and work products against their requirements.

Record the results of verification activities.

Identify action items resulting from the verification of service system components and work products.

Document the “as-run” verification method and deviations from the available methods and procedures discovered during its performance.

Analyze and record the results of all verification activities. 

Validation reports and results

Validation cross reference matrix

Validation deficiency reports and other issues

Change requests for validation methods, criteria, and the environment

User acceptance (i.e., sign off) for service delivery validation

Focus group reports

Perform functionality and quality attribute validation on selected service system components to ensure that they are suitable for use in their intended delivery environment.

Analyze the results of validation activities.