Google has set the objective to be net-zero by 2030 - and they commit (although not prominently) to reducing the majority of their emissions, which can be interpreted as at least 50% - and to neutralize the rest.

"By 2030, we aim to: Achieve net-zero emissions across all of our operations and value chain, including our consumer hardware products

[...]

As part of our goal to achieve net-zero emissions across all of our operations and value chain by 2030, we aim to reduce the majority of our emissions (versus our 2019 baseline) before 2030 and plan to invest in nature-based and technology-based carbon removal solutions to neutralize our remaining emissions"

On page 3.

I relied on Google's Sustainability report as this is the report that is linked on Alphabet ESG Page under the Environmental Sustainability Section : https://abc.xyz/investor/esg/

I'm setting this as a "no", because there is an end goal, but there is no interim target until 2030.