Do Lorentz Boosts Commute?

Do Lorentz Boosts Commute? Do Lorentz boosts commute? Like boosts, successive rotations about different axes do not commute. What are the consequences of Lorentz transformation? One of the most striking consequences of the Lorentz transformation is that simultaneity as a universal concept has to be abandoned. Simultaneity is also relative. What is boost in Lorentz