For full control, you need to have your own subsidiary. Note however that some countries do not allow majority of foreign ownership.

If you select a local representative or distributor, you leave much of the responsibility to them. It is important you select the right ones and activate them. The advantage of selecting a local representative is that they already know the market and have the clients you will get a fast start up.

There are a number of different solutions to select from. Your choice is dependent on the country, your resources and the control you want. Also how fast you want to be up and running

If you are not familiar with a country and the ways of doing business. Ask someone for advice.