How do I evaluate product demand?

How do I evaluate product demand is mainly about measuring how many relevant customers experience the problem, seek solutions, respond to the offer, and purchase. A reliable approach is to combine category data, search behavior, competitor activity, interviews, marketplaces, advertising tests, conversion, preorders, and repeat behavior. For example, compare demand across segments, messages, prices, seasons, geographies, and channels rather than using one total number. The main caution is that high interest can coexist with low urgency, limited purchasing power, strong substitutes, or expensive acquisition. The final output should provide an estimate of volume, intent, willingness to pay, timing, acquisition feasibility, repeat potential, and confidence.