How do you clean your knife & cutting board after cutting raw meat or poultry?

I don’t know if this is the right place to ask this but I have always grown up watching my family pour boiling water onto the cutting board and knife after cutting raw meat or poultry and then they would wash it with soap and water. Now, I do that as well but I started to wonder if this is really necessary since my friends do not do that. So it led me to ask the question above.