Classic support and resistance are horizontal lines: fixed levels where price reacted. They work, but they have a blind spot: a strong trend doesn't wait for a fixed level, it climbs leaning on something that's rising too.
The limit of fixed levels
In a sideways market, horizontal levels are perfect: price bounces between floor and ceiling. But in a trend, price leaves those levels behind quickly and the relevant support becomes dynamic: it moves with the trend.
Support that moves
A rising moving average acts as dynamic support: in a healthy trend, price pulls back to the average and resumes. turns that idea into adaptive zones instead of a single line, giving you a realistic margin of where price can react.
Combining the fixed and the dynamic
The powerful approach is to use both: horizontal levels for ranges and moving averages for trends. When a dynamic support coincides with a historical horizontal level, that confluence is one of the most reliable zones on the chart.