Party Roles D&D 5E

What party roles should be filled in a 5e D&D party? How different is it than online games? Is D&D a Storytelling, Roleplaying or Tactical game?
Love the new Treantmonk image as much as I do? It's from Dino Kranjcevic who can be followed
on Instagram at / beard.positive
Thanks Dino, it's fantastic!
For my guides and handbooks find me at:
treantmonk.wor...
Thanks to:
@makemyanthem for the intro music.