Combination of price action and volume.
VWAP is a level of interest for big players, since there is a lot of liquidity here – they are usually entering theirs positions here.
VWAP resets every day with dOPEN (0000UTC)
VWAP is dynamic support and resistance. Means it is changing though the day.
For getting into position always look for confluence with VWAP – this gives high probability setups.
Anchored VWAP
I use this tool mostly on HTF to get the VWAP of longer trend or sideways movement. Advantage of Anchored VWAP is that you can select exact point from where you want to be getting the DATA.