Once you have estimated the keyword search volume with research tools, you need to interpret and apply the data to your SEO strategy. It's important to remember that the search volume data is not exact, but an approximation based on various factors and algorithms. Therefore, don't rely on absolute numbers but rather on relative trends and comparisons. Additionally, consider the intent and context of the keywords as the search volume alone does not tell you how relevant or valuable a keyword is for your audience or business. To get the most out of your keyword research, balance between high-volume and low-volume keywords. High-volume keywords may have more traffic potential, but also more competition and difficulty. Low-volume keywords may have less traffic potential, but also less competition and more specificity. Ultimately, the best way to know if your keyword research is effective is to test and measure your results. Track your rankings, traffic, conversions, and other metrics for the keywords that you target, and see how they perform over time. Adjust your strategy accordingly, and keep an eye on the changes and trends in the search volume data.