Guest Editorial 2021 Custom Integrated Circuits Conference

This Special Section of the IEEE Journal of Solid-State Circuits (JSSC) features expanded versions of key articles presented at the 2021 Custom Integrated Circuits Conference (CICC), which for the second time in a row was fully virtual due to the coronavirus pandemic. Originally planned to be held in Austin, TX, USA, the unpredictability of COVID-19 quickly lead the conference organization to decide to (again) go for a fully virtual format from April 25 to 30, 2021. With all the experience of the previous year, where CICC was the first IEEE Solid-State Circuits Society (SSCS) conference to go virtual, and that of subsequent SSCS and other conferences, it was comparatively smooth sailing.