An outdoor kitchen can be elaborate or modest. The choice will depend on your needs and your budget for the project.
Do you feel that you would enjoy grilling outside more if you have adequate work space around your grill? If yes, plan to build the barbecue into a workspace and cover the countertop in tile or granite. A note of caution; dark countertop colors are beautiful, but they also attract heat. Go with a natural or neutral color for a more comfortable outdoor dining experience. Your prep area could have running water, a refrigerator and storage.
If you can put a roof over the outdoor kitchen consider a cost- effective pergola style with vines growing over it for a nice experience.
If you can afford an area with all the comforts of the interiors, consider a kitchen with a full cover over it. Install ceiling fans for added comfort.