It is the belief in the same God; the Creator; as the one and only one God to be worshiped. The three religions are monotheistic religions: they believe in one all-powerful God.
They also all believe in the existence of Abraham, and consider him a prophet. As such, another term for them are the Abrahamaic religions. (While Jews don't usually accept the existence of Christ, Muslims do (however, Muslims recognize Jesus as a prophet)
There is an afterlife
Apex
The basis of Judaism, Christianity and Islam is the belief in the ONENESS of Almighty God (Allah - in Arabic).
Monotheism.
Judaism
Islam, Judaism and Christianity.
Judaism Christianity and Islam all are...Monotheistic Religions.
Monotheism - the belief in a single supreme God.
Good over evil which is monotheism.
The belief in one God
That is monotheism.
The main site shared Holy by these three religions is Jeruselum.
Judaism, Christianity, and Islam have all claimed the Holy Land for themselves.
Judaism is not "performed". It is a religion, a theology, a belief. Where is Christianity or Islam performed? I guess the best answer is "in one's heart."