In a large bowl, combine the cherry tomatoes, artichoke hearts, red onion, and fresh basil.
In a small bowl, whisk together the olive oil, red wine vinegar, garlic powder, salt, and pepper until well combined.
Pour the dressing over the salad mixture and toss gently to coat all the ingredients evenly.
Sprinkle the crumbled feta cheese on top and give the salad a final gentle toss.
For best flavor, let the salad sit for at least 15 minutes at room temperature before serving to allow the flavors to meld.