International Conference on Technology and Instrumentation in Particle Physics (TIPP 2021)

TIPP 2020 was originally planned as a traditional in-person conference at the ski resort of Whistler, British Columbia, near Vancouver. After the Coronavirus epidemic forced the eleventh-hour postponement of the conference in 2020, IUPAP C11 encouraged us to resurrect the Vancouver TIPP as a virtual event a year later, in May 2021. While we still hope someday to welcome the community to our beautiful mountains, the virtual event was a much-needed opportunity to share and discuss updates in the field of detector technology. Many of the results presented at the conference are detailed here, and we trust that these papers will be a useful resource for the detector community.