INF/336 INF336 INF 336 WEEK 5 DQ 1 / DISCUSSION 1 SUSTAINABILITY - LATEST  D O W N LOA D H E R E INF/336 INF336 INF 336 Week 5 DQ 1 / DISCUSSION 1 Sustainability - LATEST Sustainability. Sustainability is an important ethical and environmental issue in purchasing. Describe one material, product, or service that can contribute to sustainability in a project you have been involved with, or in your current organization. Describe how these decisions enable the organization to avoid violations in terms of environmental issues.