Algorithmic trading strategies usually fall into categories such as mean reversion, momentum, breakout, arbitrage, market making, and AI-assisted analysis. Each category still has to become precise platform logic before it can be automated.
Strategy categories are only a starting point
Two traders can both describe a strategy as “momentum” and mean completely different rules. Development requires exact definitions for entries, exits, filters, sizing, and failure conditions.
Build around the platform
NinjaTrader, TradeStation, MetaTrader, MultiCharts, TradingView, and TWS all handle data and automation differently. The strategy should be scoped around the platform that will actually run it.

