What is supply and demand matching?
In a real estate agency, supply is the properties in your portfolio and demand is the people looking to buy, rent or take over something specific. Matching them means checking, systematically, which properties fit which buyers. It sounds obvious, but in practice matching is done from memory, when an agent happens to remember that «the lady from the other day might like this flat».
Good matching works both ways. When a new demand comes in, it checks the whole portfolio. When a new property comes in, or drops in price, it checks every open demand. If you only do the first, older buyers are forgotten; if you only do the second, new ones wait until something comes in.