How a grid of orders is built, what its income is actually made of, why martingale does not reduce risk but changes its shape, and what keeps the loss bounded. The code of such a bot is open.
Where the spread goes in arbitrage — fees, slippage, transfers and funding. A worked example with illustrative numbers and what a bot must check before it enters.
1C:Enterprise integration options — OData, HTTP services and file exchange. Why you should never write to the database directly and how to survive configuration updates.
Why a bot cannot be priced before the strategy is analysed, how a MetaTrader expert advisor differs from a trading platform, and how development is paid for.