Asset allocation refers to how an investor distributes their funds across major asset classes like stocks, bonds, real estate, and cash. The document discusses three main asset allocation strategies: strategic asset allocation involves maintaining a long-term target allocation; tactical asset allocation aims to exploit short-term market changes; and insured asset allocation adjusts based on an investor's risk tolerance which may change with gains or losses. Successful asset allocation requires defining goals, assessing risk tolerance, creating a target portfolio, and periodic review/rebalancing.