Insistence on well rather than good has resulted in a split in connotation: well is standard, neutral, and colorless, while good is emotionally charged and emphatic.
WELL applies the science of physical and social environments to benefit the health, well-being and performance of your people.
You use well in front of a prepositional phrase to emphasize it. For example, if you say that one thing happened well before another, you mean that it happened a long time before it.