This report provides background information and analysis in support of NISTIR 8074 Volume 1, "Interagency Report on Strategic U.S. Government Engagement in International Standardization to Achieve U.S. Objectives for Cybersecurity." It provides a current summary of ongoing activities in critical international cybersecurity standardization and an inventory of U.S. Government and U.S. private sector engagement. It also provides information for federal agencies and other stakeholders to help plan more effective participation in international cybersecurity standards development and related conformity assessment activities.