@rotutsThe appliance store where I got it, delivered and installed it. It took two guys and about 45 minutes and involved, in my case, shutting off the electricity, converting direct wiring to a double 110 outlet and installing it in the cabinet over the microwave. Mine didn't require any venting installation.
PS. If you look up a microwave you are interested in, some sites list the installation manual so you can see what is involved in the one you like.