Description

Roles

Attributes

Steps

1. Create Utility Tree:
   
   Examine quality of service requirements and product requirements to determine the key drivers of quality and function in the application.
   
   Construct a utility tree that represents the overall quality of the application. The root node in the tree is labeled Utility.
   
   Subsequent nodes are typically labeled in standard quality terms such as modifiability, availability, security. The tree should represent the hierarchical nature of the qualities and provide a basis for prioritization.
   
   Each level in the tree is further refinement of the qualities. Ultimately these qualities become scenarios.
2. Construct Assessment Matrix:
   
   For each leaf in the utility tree, write a scenario. The scenario is in the form of context, stimulus, and response. For example, "Under normal operation, perform a database transaction in fewer than 100 milliseconds."
   
   Open the assessment matrix template. Enter each scenario as a row in the assessment matrix.
   
   Enter each architectural strategy as a column. The intersection of strategies and scenarios are the cells where each strategy is rated against a scenario.
3. Rate Strategies:
   
   Review the matrix and evaluate each cell in terms of value, development cost, and operations cost. Each rating is either low, low-medium, medium, medium-high, or high.
   
   Value is the overall quality of the solution that will be derived from applying the strategy to the scenario and also incorporates an assessment of risk.
   
   Development cost is the effort expected to realize the scenario in the context of the strategy.
   
   Operations cost is the expected run-time efficacy of the strategy in the context of the scenario.
   
   If a proof of concept has been built for a strategy, use information from that proof of concept to help determine the value, development cost, and operations cost.
4. Normalize Matrix:
   
   Review the matrix a second time and calculate a rating number for each cell. Use the provided rate table in the assessment matrix template to calculate the numbers. For example, a cell with a value of Moderate (1), development cost of High (0), and operations cost of Low (2) equals a total rating number of 3.
   
   Upload the completed assessment matrix to the project portal.

Inputs and Outputs

WorkProduct	Input	Output	Allowable States
LAAAM Assessment Matrix			(none)

Predecessors

Type	Name	Dependency Type
	Create Proof of Concepts	Finish-Start

Successors

Type	Name	Dependency Type
	Select Architecture	Finish-Start