Bond laddering is an investment strategy that minimizes risk from interest rate movements by creating a portfolio with bonds that mature at regular intervals. This provides a steady cash flow and spreads out reinvestment risk. With bond laddering, if interest rates change, only a portion of the portfolio is impacted each time rather than the entire portfolio maturing at once. While it may lower overall returns, bond laddering reduces the effect of reinvestment risk compared to having all bonds mature simultaneously.