Dice tomatoes and put in bowl. Add the basil, garlic, olive oil and salt & pepper to taste. If you prefer, you may put ingredients in a saucepan and gently heat for a few minutes just to warm, not necessarily to cook.
If using zucchini instead of pasta, spiralize with a Spiralizer or slice zucchini in strands like pasta (a mandoline makes this work easy). Saute in skillet with a little bit of olive oil just to soften the zucchini, about one minute.
Put zucchini “noodles” in large serving bowl and top with sauce. Shave or grate fresh parmesan cheese on top.
If using pasta, cook pasta according to package directions. Drain but do not rinse. Put pasta in large serving bowl. Add tomato mixture and toss a little to combine. Shave or grate fresh parmesan cheese on top.