Use theProgressive Design-build: Design-Build Procured with a Progressive Design & Price https://dbia.org/wp-content/uploads/2018/05/Primer-Progressive-Design-Build.pdf .by the Design-Build Institute of America (DBIA). Describe in the context of progressive design-build procurement thestepped, or progressive process. you are required to read this guide and any additional external references that you found. Use reference and in-text citation