The first sentence of TFA:

> President Donald Trump’s administration is suspending tech giant Microsoft from a program to apply for green cards for workers who come to the U.S. to live and work using H-1B visas

Everything described in the article, is about H1-B. So yes, the action is preventing greencard applications for those H1-B visas, but that is functionally the same as restricting Microsoft's access to H1-Bs since a future green card sponsorship is the reason many are there working for them on that visa.