What does invading the host cell enable the virus to do?

Invading the host cell allows a virus to hijack the cell's machinery to replicate its genetic material and produce new viral particles. By entering the host cell, the virus can evade the host's immune response and exploit the cell's resources, such as enzymes and ribosomes, to synthesize proteins necessary for its survival and propagation. This process ultimately leads to the production of more viruses, which can then go on to infect additional cells.