The difference between this two is that microblading is done manually by small blade creating little strokes one by one.
Ombre is a shading technique done with a machine that uses very small needle which implements the pigment gradually creating ombre effect, normally is darker at the tail and lighter at the front of Eyebrows.
With this technique you can increase density and fullness of the eyebrows but also make the shape absolutely perfect in terms of proportions.