What is the actual definition of "ISO Certification"?:

The International Organization for Standardization headquartered in Geneva, Switzerland is the world's largest developer and publisher of International Standards, many that describe the best practices of private industry and government. Over 157 countries including the United States have adopted ISO standards as their own. After a rigorous review of our facility, practices, and technology, Tele Direct was certified in November for this prestigious distinction. This means that TeleDirect adheres to strict guidelines for the protection of your data and continuously strives to improve those safeguards. By earning ISO 27001 certification we have further demonstrated our commitment to making our Company more secure and securing your information.