I'm in the medium frequency trading world. (calculate lots of market conditions, send at most a few orders a minute) I'd like to understand the HFT world a litt

I'm in the medium frequency trading world. (calculate lots of market conditions, send at most a few orders a minute) I'd like to understand the HFT world a little better. Is it basically "do what MFT does, but faster", or is there any specific advantage like getting into an order queue with priority?