IVF or In vitro fertilization is a procedure where the eggs of the female partner are incubated with the sperm sample in a laboratory dish and fertilization is allowed to happen.

ICSI or Intracytoplasmic sperm injection is a procedure where each egg is injected with one sperm individually, with the help of special instruments called micromanipulators.

Both procedures differ only in the method of fertilization, other steps remaining the same.