What is a jito in Japan?

Could you please explain to me what exactly a "jito" is in the context of Japan? I've heard this term mentioned in relation to certain businesses or organizations, but I'm not quite sure what its specific meaning or role is. Could you elaborate on its definition, its historical background, and perhaps even some examples of how it might be used in modern-day Japan? Additionally, I'm also curious to know if it has any special significance or importance in Japanese culture or society. Thank you for your assistance in clarifying this matter for me.