Standards are documents that set out specifications, procedures and guidelines that aim to ensure products, services, and systems are safe, consistent, and reliable.
There are three categories of Standards:
1) International Standards: Developed by ISO, IEC and ITU for countries to adopt for national use.
2) Regional Standards: Prepared by a specific region. Such as the European Union’s EN standards, or joint Australian/New Zealand standards.
3) National Standards: Developed either by a national standards body or other accredited bodies.
ISO’s initiative is to combine these various national and regional Standards into internationally applicable Standards.