Cyber Kill Chain approach

please write one page of cyber Kill chain what you understand about kill chain? so in here summary of cyber kill chain and why it used where it used.. an example of organization use this model... how much could you cost to install such as model with different types since each organization have design... method to use on this such as firewalls or policy... an example as well,, how would this approach safe organization resource... Q2: what is the 7 steps of cyber kill chain? please explain each the steps as well please use easy and simple words in this assignment