In 2019, the City of Seattle convened the Industrial & Maritime Strategy Council, bringing together more than 60 stakeholders from industry, labor, workforce organizations, developers, and nearby communities to modernize industrial policy for the first time in decades. In 2021, the Council released 11 strategies to guide the next generation of industrial and maritime jobs. These strategies culminated in the adoption of the 2023 Seattle Industrial & Maritime Strategy, setting the framework for the creation of the Sound Industrial Alliance (SIA).

Originally conceived as the Manufacturing Maritime Industrial Association (MMIA), the SIA was founded to serve as Seattle’s first city-wide industrial stewardship organization. By engaging industry, building partnerships, and advancing supportive policy, SIA strengthens the foundation for industrial businesses to thrive. Working with industry and community stakeholders, SIA is committed to protecting industrial lands, supporting innovation, and ensuring family-wage jobs remain a cornerstone of Seattle’s economy for generations to come.