Salesforce's OpenCTI (Computer Telephony Integration) framework offers the advantage of allowing agents to use telephony across various browsers and operating systems without the need for multiple developments. This cross-platform compatibility ensures a consistent user experience and simplifies telephony integration within Salesforce, enhancing efficiency and accessibility for service agents.

Before beginning the build phase, especially in environments where projects are numerous and resources are limited, the design phase is crucial. This phase involves planning, creating mock-ups, and defining the project's scope and requirements. It sets a clear direction and ensures that all stakeholders have a shared understanding of the project's goals and how they will be achieved, thereby streamlining the development process and reducing the need for significant changes during the build phase.

To measure first-call resolution by channel, agent, and calendar month, creating a joined report is the most effective reporting solution. Joined reports in Salesforce allow for the combination of data from different report types into a single report, providing a comprehensive view of related metrics. This capability is particularly useful for analyzing first-call resolution rates across multiple dimensions (channel, agent, and time), enabling the support manager at Universal Containers to gain insights into performance trends and identify areas for improvement in the service delivery process.

Creating a custom report type allows for more flexibility in reporting by combining different objects and their relationships, such as Service Contracts and Entitlements in this case. Universal Containers can use a custom report type to specifically analyze customers with Service Contracts and their associated entitlements, providing insights into support offerings and potential adjustments.

Using a sharing set is the most appropriate solution to ensure Experience Cloud site users can access only the cases where they are listed as the contact. This configuration aligns with Salesforce's security model, providing record access based on the user's relationship to the case via their Contact record, ensuring data visibility is restricted appropriately.