The key business criteria that should be ensured for launching a campaign that rewards customer behavior by giving away free merchandise is viability. Viability is the degree to which a product or service is profitable and sustainable for the business. By giving away free merchandise, Cloud Kicks should ensure that the campaign is viable in terms of costs, revenues, risks, and benefits. Desirability or feasibility may not be the key criteria for this campaign, as they relate to the customer or technical aspects of the product or service.

Interviewing 8-10 customers about how banking fits into their lives and their ideal relationship with their bank is the best way to learn about the unique expectations of the company's customers. This method provides qualitative and contextual insights into the customers' needs, goals, pain points, and emotions. https://trailhead.salesforce.com/en/content/learn/modules/salesforce-strategy-designer-certification-prep/conduct-customer-interviews

Involving the customer in the presentation can demonstrate internal support and shared commitment to the project, helping to alleviate the lead's concerns. This collaboration can foster trust in the design thinking process and the project's potential impact, facilitating approval.

A business model canvas is a methodology that a strategy designer should use to help stakeholders understand the impact of making sustainability a new core value on current products and services. A business model canvas is a tool that helps describe, design, and evaluate the key elements of a business model, such as value proposition, customer segments, revenue streams, cost structure, and key resources. It helps assess the desirability, viability, and feasibility of a product or service, and identify opportunities and risks for improvement or innovation. https://trailhead.salesforce.com/en/content/learn/modules/salesforce-strategy-designer-certification-prep/create-a-business-model-canvas

After developing a prototype, it's crucial to examine the underlying assumptions about the market that need to hold true for the solution to succeed. This helps in identifying potential risks and validating the strategy's alignment with market realities, guiding further development and refinement.