2.4 Integrate sustainability into every stage of the ideation process

Materials: Low
Energy: Low
Water: Low
Emissions: Low

Optimize materials created at every stage of the process and involve users in the creation process.

Sustainable brand development: Human-testable
Optimize all branding materials and assets approved during the ideation process in line with sustainability best practices prior to deployment. This also applies to brand refreshes, rebranding, and later enhancements. Make publicly available branding guidelines detailing the sustainability impact and best-practice deployment of materials and assets.
Wireframes and prototypes: Human-testable
Use wireframes and rapid prototyping to quickly build consensus, reduce risk, and reduce the number of resources needed to build features. Evaluate the impact of all tools used.
Participation and testing: Human-testable
Use the participatory design approach to involve users within the iteration and design process. When conducting user testing, reach out to your community to help improve your product. Provide opportunities for users to apply their knowledge and experience to your product or service.

Conversion
Testing user interfaces usually leads to improved conversion rates as they can be optimized accordingly. This includes removing anything that causes friction and designing content in a way that optimizes user flow, reducing emissions while maximizing conversion.
Economic
Incorporating wireframes, prototypes, and user testing into early product design cycles reduces money and effort otherwise wasted building features people will not use.