Microsoft — take a firm hold or is it time to sell?

$Microsoft(MSFT.US)$ has been very good to me over the years. Nadella is one of the most talented capitalists of all time. Since I started buying stocks, I've been good at choosing great companies, but I'm having trouble discerning whether the market is going to overpay me.

The time has come to assess what functionality actually exists at the moment and how much it could actually benefit Microsoft. This is because currently, in terms of being a major technology company, $Alphabet-A(GOOGL.US)$ with $Amazon(AMZN.US)$ That's because I think it's more valuable.