The Dividend Discount Model (DDM) is a widely used financial valuation tool that calculates the intrinsic value of a company's stock based on its future dividend payments. The significance of DDM lies in its focus on the fundamental value derived from a company's ability to generate and distribute dividends over time, making it especially relevant for dividend-paying companies.

1. Focus on Cash Flow: DDM emphasizes actual cash returns to shareholders, providing a direct measure of investment value. It is beneficial for evaluating mature companies with stable and predictable dividend policies.
2. Long-Term Perspective: By projecting future dividends, DDM encourages investors to focus on long-term value rather than short-term market fluctuations.
3. Intrinsic Value Estimation: DDM helps identify whether a stock is overvalued or undervalued by comparing its intrinsic value with the market price.
4. Simplifies Decision-Making: DDM provides a clear framework for investors seeking steady income to assess the potential of dividend-paying stocks.

However, DDM has limitations. It assumes constant or predictable dividend growth, making it less effective for companies with irregular dividend patterns or those reinvesting profits instead of distributing them. Despite this, DDM remains a cornerstone in equity valuation, emphasizing the importance of shareholder returns.