According to Jay Thomas, a financial expert from the Investing and Money website, the Bond Ladder is a financial strategy to get the most interest you can in very safe investments, by buy a series of bonds with longer redemption times and higher interest rates.
Anything is better than the fraction of a percent you get in a bank savings account right now.
But interest rates are going up, so bonds rates will go up. Unfortunately, inflation is way higher than these interest rates so be very careful how you set this up.