Here is a good illustration (from the older thread linked here). It shows anchoring downwind and it can also be used to show anchoring with the wind on the beam.
Figure 4 – Example of Orthogonal Anchoring. (Illustration courtesy of D. Barber)
This method uses environmental forces (wind and current) rather than fighting them. One disadvantage is properly controlling the rate the chain is paid out requires more skill and good judgement from the crew on the bow.