As Australian government is moving toward a label-free visa system. It is important for Australian visa holders to understand their visa conditions. Particularly 8503 condition, no further stay.
Many people come to Australia on Tourist Visa and have this 8503 condition attach to it. It means you cannot renew your visa onshore (inside the Australia). Another word, you cannot extend your stay. If you need to apply for another visa, you need to travel out of the country and apply from outside (offshore).
Many people came here on Tourist Visa, meet their partner and want to extend their stay here. Sadly, that cannot be done if the visa have 8503 condition. Therefore, it is important if you check and understand your visa condition. So that you can get your expectation right.