De or het webkoppeling?

The correct Dutch article is:

de webkoppeling

Rule Words ending in -ing: almost always de. See the rule

How to use webkoppeling

the webkoppelingde webkoppeling
this webkoppelingdeze webkoppeling
that webkoppelingdie webkoppeling
our webkoppelingonze webkoppeling
your webkoppelingjouw webkoppeling
every webkoppelingelke webkoppeling
which webkoppeling?welke webkoppeling?
a big webkoppeling / the big webkoppelingeen grote webkoppeling, de grote webkoppeling