ISO 9001:2000 is the current version of the Standard. It was revised in the year 2000. Past versions of ISO 9000 are no longer in use. Companies are now only registered to ISO 9001.
Why do companies want ISO 9001:2000?
Quality Management System, Many organizations decide to Implement ISO 9001 and obtain registration because it assures customers that the company has a good Quality Management System (QMS) in place. An organization with an effective QMS will typically meet customer expectations better than an organization that does not have an effective QMS. Many organizations require their suppliers to have ISO 9001 Registration.
Internal effectiveness and productivity benefits Other organizations implement an ISO 9001 QMS because it has proven over the years that it leads companies to better operations, improved performance, and improved profitability.