Making hash has been a part of cultivating cannabis for thousands of years.
Cultures around the world developed different hash-making techniques as a way to preserve the resin and oils that the plant produced for long term storage. It would not spoil as easily as dried flower. The resin lasted much longer when collected and processed.
There are many techniques for collecting and processing resin.
Some are thousands of years old and require nothing other than cannabis flowers and your hands. Other techniques are much more modern and require laboratories, permits, solvents, and certifications. My focus is on combining traditional techniques with the conveniences of today's world.