Zoom | The 2025 PreMiEr SEI Symposium is a virtual workshop designed to bring together researchers, engineers, ethicists, and policymakers to examine the societal and ethical dimensions of microbiome engineering in the built environment. Over the course of the afternoon, participants will explore governance frameworks, public perceptions, and strategies for meaningful community engagement. This symposium provides a collaborative space to critically assess the broader implications of microbiome research and identify pathways for responsible innovation.