Which metric should the consultant recommend to determine whether the Implementation project is successful?

Measuring Implementation Success: The percentage of staff logins each month is a strong indicator of user adoption and engagement with the new system. High login rates suggest that staff members are regularly using Education Cloud for their daily tasks. Why Percentage of Staff Logins: User Adoption: Frequent logins indicate that staff are actively using the system, which is critical for the success of the implementation. Engagement: High engagement rates reflect that the staff find the system useful and are leveraging it to manage their workflows. Data Accuracy: Regular use ensures that data entered into the system is current and accurate, improving overall data quality. How to Track: Login Reports: Create reports in Salesforce to track the number of logins by staff members each month. Dashboards: Set up dashboards to visualize login trends and identify patterns or areas needing improvement. Steps to Implement: Create Login Report: Navigate to the Reports tab and create a new report based on the User Login History object. Include fields such as User Name, Login Date, and Login Time. Group the data by month to calculate the percentage of active users. Set Up Dashboard: Create a dashboard that displays the login data. Use charts and graphs to visualize the percentage of staff logins each month.
Reference: Salesforce Documentation: User Login History Salesforce Help: Creating Reports and Dashboards