Separate the number people pay from the economics the asset can produce.
The move
Valuation compresses expectations into a number. That number may be rational, emotional, strategic, or temporary.
Value is slower. It comes from future cashflows, competitive position, and the durability of returns.
The gap
A high valuation can be justified if the market is huge, margins can expand, and the company can defend its position.
It can also be a momentum story wearing finance clothes.
Use it
Translate valuation into required performance. How much revenue, margin, retention, or market share must appear? Then judge the path, not the headline number.