Moreover, insurance policies and IRAs made payable to specific beneficiaries (as opposed to your estate) and bank or investment accounts made payableondeath aren't part of your court administered "probate" estate.
Depending on your state, you may be able to set up payable-on-death designations on your bank accounts and transfer-on-death designations on your brokerage accounts, vehicle(s), and real estate as a way to make sure assets transfer outside of probate.