The phrase "as a gateway for" is correct and usable in written English.
It can be used to describe something that serves as an entry point or means to access something else.
Example: "The new software acts as a gateway for users to access a variety of online resources."
Alternatives: "as a means to" or "as a portal for".
The island served as a gateway for Chinese and Korean culture to enter Japan.
The lenders extended the money, while the College Board received a fee from them for serving essentially as a gateway for borrowers.
The church, built in 1895 by a wealthy financier, Adrian Iselin, and his wife, Eleanora O'Donnell Iselin, did not start out as a gateway for the working class.
Most cars now contain more than 50 separate electronic control units collecting vehicle data and improving performance; nearly all have wireless entry points that could act as a gateway for hackers.
As a Roman Catholic who believes in abstinence until marriage, she also wondered whether the vaccine would somehow send the wrong message, and act as "a gateway for young women to think they have sexual freedom".
In the Netherlands transportation is of special importance because the country functions as a gateway for the traffic of goods between western Europe and the rest of the world.
"London is perfectly placed to act as a gateway for Asian banking and investment in Europe, and a bridge to the United States," Mr. Osborne said in a speech to the Asian Financial Forum in Hong Kong.
In 2014 he began work on an art installation that would serve as a gateway for the Chicago Transit Authority's refurbishment of the 95th Street Red Line rapid-transit station.
In response to the charge that the software is used as a gateway for distributing pirated music files, Ms. Richardson said her company bore no responsibility for such problems.
The BoP Hub serves as a gateway for business ventures, technologists and manufacturers to access BoP markets, which the World Bank has estimated are collectively worth US$5 trillion.
The NGOs explained in their open letter they had concerns not just about the UN, but also the Syrian Arab Red Crescent (Sarc), which works closely with the UN and acts as a gateway for access to parts of the country.
