Globalization refers to the integration of goods, services, and culture among nations accelerated by advances in technology. While globalization provides advantages like access to expertise and larger markets, firms face challenges from infrastructure differences, regulations and customs. The digital divide separates those who have access to technology and the internet from those who do not, and can occur between countries, regions or neighborhoods. Nielsen described the digital divide as having three stages: an initial economic divide in access, a usability divide in skills, and a deeper empowerment divide in how technology is used.