Scalping is the high-frequency end of the spectrum. Positions open and close in minutes. Targets are small: 5 to 15 pips per position is typical, sometimes less. A scalping strategy might fire dozens of positions a day on a single instrument. The thesis is that small, well-timed entries, repeated often enough, compound into a serious result.
The catch is that scalping is brutally sensitive to friction. Spread, slippage, commission, broker latency, every cost line eats a much bigger slice of the per-position target than it does for slower styles. A 1 pip spread on a 10 pip position is 10 percent of the target. The same spread on a 100 pip position is 1 percent. The math is unforgiving in the wrong direction.
This is why scalping really wants tight execution. ECN or premium STP brokers with raw spreads. The most liquid hours of the day (London open, the London-New York overlap). Anything else and the strategy starts paying away its edge in costs.
It is also a style where algorithmic execution beats humans cleanly. Hundreds of decisions per session, all under time pressure, all requiring discipline. Javlot strategies that scalp ship with explicit broker requirements and session windows, baked in.