A synchronous callback function will be always executed right after some action is performed.

Source: https://www.infoworld.com/article/3687234/how-to-use-callbacks-in-java.html

It offered synchronous instruction rather than self-paced coursework.

Source: https://voiceofsandiego.org/2023/05/30/morning-report-the-red-flags-that-worried-district-officials/

Over the last three years, she said, teachers have learned when to employ synchronous -- or simultaneous -- learning and when it's most effective to let students do things at their own pace.

Source: https://www.baytoday.ca/ontario-news/more-than-3-years-since-pandemic-started-some-still-take-advantage-of-virtual-school-7473586

“The simplest engineering solution for a drive train on an electric vehicle is to use a permanent magnet synchronous motor, and those permanent magnets are made of REEs,” Jon Hykawy of Stormcrow Capital told the Investing News Network in an interview.

Source: https://investingnews.com/ucore-announces-closing-of-final-tranche-of-private-placement-for-total-gross-proceeds-of-4-82-million/