Main difference between biotechnology and microbiology

The difference is that biotechnology studies and covers microbiology and others area of science but microbiology does not study biotechnology

Biotechnology the use of biology to solve problems and make useful products. The most prominent area of biotechnology is the production of therapeutic proteins and other drugs through genetic engineering.. Microbiology is the study of microorganisms like virology, bacteriology, protistology, mycology, immunology and parasitology.