You are tasked with selecting the best architectural solution for a Telematics Software $.$ The client has decided that the quality attributes that are significant are rmance, Security and Maintainability.

Based on a brain$-$storming session to ss Quality Attributes and Utility Tree the stakeholders decided that the ortance to these three attributes was $40\%,35\%$ and $25\%$ respectively. ee architectural solutions have been proposed $($A$,$ B$,$ and C$),$ each impacting the Quality attributes differently.

You wish to use the Cost Benefit Analysis Method $($CBAM$)$ to evaluate these solutions and select the most cost$-$effective one.

Utility Points at Current Levels, Worst Case and best Case are as follows:$*$

Performance: Current Level: $60,$ Worst Case: $50,$ Best Case: $100*$

Security. Current Level: $70,$ Worst Case: $50,$ Best Case: $100*$

Maintainability: Current Level: $65,$ Worst Case: $50,$ Best Case: $1001.$ Performance Scenario: The software system is an e$-$commerce platform that needs to handle a high volume of transactions during peak shopping seasons$*$

Current Case: The system can handle $1,000$ transactions per minute$*$

Worst Case: The system can handle only $500$ transactions per minute$*$

Best Case: The system can handle $2,000$ transactions per minutes.

SecurityScenario: The software system stores sensitive customer information, including payment details, and needs to ensure data protection against cyber threats.$*$

Current Case: The system has a security score of $70$ out of $100,$ based on vulnerability assessments and penetration testing.$*$

Worst Case: The system has a security score of $50$ out of $100.*$

Best Case: The system has a security score of $100$ out of $1003.$

MaintainabilityScenario: The software system requires regular updates and bug fixes. The ease of maintaining the system is crucial for minimizing downtime and ensuring smooth operations$*$

Current Case: The system requires $20$ hours of maintenance per month.$*$

Worst Case: The system requires $40$ hours of maintenance per month.$*$

Best Case: The system requires $10$ hours of maintenance per month.The impact of each Architectural Solution on the quality attribute has been evaluated by the team of Architectural Evaluators:

$1.$ Solution A:o Cost: $2500,000$o Performance Improvement: $30\%$ o Security Improvement: $20\%$ o Maintainability Improvement: $10\%$

$2.$ Solution B: Cost: $2600,000$o Performance Improvement: $40\%$ o Security Improvement: $25\%$ o Maintainability Improvement: $15\%$

$3.$ Solution C:o Cost: $2700,000$o Performance Improvement: $50\%$ o Security Improvement: $30\%-$ Maintainability Improvement: $20\%$

Assume that there is a linear relation between Quality Attribute measure and the Utility point between Worst Case, Current Case and between Current Case and Best case.Answer the question below.

Tabulate your computations wherever possible.$*$

Calculate the Quality Attribute Measures for each Architectural Solution. $[3$ Marks$)*$

Calculate the Utility Points against each quality attribute for each Architectural Solution. $[5$ Marks$]*$

Determine the Increase in Utility for each quality attribute for each Architectural Solution. $(2$ Marks$]*$

Calculate the Total Utility gain for Each Solution: $[2$ Marks$)*$

Calculate the Cost$-$Benefit Ratio and select the best Architectural Solution $[2$ Marks$]$