Shoot on a clear, dark night in a location with very little light pollution. A new moon (or only a thin crescent) is best, because moonlight will wash out the stars. You also need the Milky Way to be visible in the part of the sky you want.

Use a tripod and a long exposure. Keep the exposure roughly under 30 seconds if you want stars to stay mostly points rather than turning into trails. If you do want longer exposures without trails, a tracking mount such as a simple barn-door tracker can follow the sky’s motion.

The foreground and sky can often be captured in one shot if the scene is dark and the exposure is long enough. Some color cast in the landscape can come from nearby light pollution or intentional added light. Basic post-processing is usually enough: contrast and color correction/touch-up. The example may be close to straight out of camera apart from mild adjustments.

So the essentials are: dark location, moonless/near-moonless night, clear skies, stable support, and a long exposure.