The Amud Yomi program began in February of 1973 under the guidance and leadership of Harav Yaakov Mordechai Greenwald Zt"l. It is currently in the middle of the 4th cycle of learning through shas.
It was the initiative of Harav Hagoan Rabbi Yaakov Teitelbaum Zt"l. The idea was to learn at a slower pace than the regular standard Daf Yomi and achieve a solid grasp of each amud of gemara. The Amud Yomi program learns one amud of gemara every day, including Shabbos and Yom Tov.
In the early years, it was just a few people in Monsey, New York, getting together to learn as a chabura at this pace. However, over the years many people joined and the chabura grew in size.
The program was endorsed by many leading Rabbonim, including Harav Hagoan Rabbi Moshe Feinstein Zt"l and Harav Hagoan Rabbi Yaakov Kamenetzky Zt"l.