A dutch oven is great for cuts of meat like that pork butt or beef brisket. They can't make real smoked BBQ, but they're much easier to use than a smoker. We first brown the meat with a little olive oil inside the dutch oven on the stove top, then add all the other ingredients, and put it in the oven with the lid on.
Most are basically large oven-proof covered cast iron or ceramic pots. The handles on the pot & lid are oven-proof – no plastic, and the lids are made to keep water vapor inside the pot while cooking. They run from cheap, $50-100 for Chinese made dutch ovens, to very expensive >$300 for French made enamel-covered cast iron ones that will last a lifetime.
My wife really likes
this ceramic dutch oven because it works well, it's easy to clean, and it's lighter than the cast iron ones. It cost about half the price of those very expensive French dutch ovens.