Image source: Commons.Wikimedia.org
There are three basic groups of Jewish people who have a different understanding of the interpretation of the Torah.
Orthodox Jews believe that all of the practices in the Torah which it is practical to obey must be obeyed without question.
Conservative and Reform Jews believe that the ancient laws and practices have to be interpreted for modern life with inclusion of contemporary sources and with more concern with community practices than with ritual practices.
Reform Jews also allow everyone to sit together, men and women, and both Hebrew and the local language are spoken in services.
Source: https://www.uri.org/kids/world-religions/jewish-beliefs