According to United Nations Economic Commission for Europe (UN/ECE), paperless trade's stages of development are divided into five steps based on the range of paperless trade services and utilization of electronic documents.
(UN/ECE,"A Roadmap Towards Paperless Trade", `06.3, p.3.)

Korea has not only achieved the processing of electronic documents in all trade-related areas, including customs clearance, confirmation of requirements and logistics, but also is realizing increased paperless trade service between nations continuously. Since more than 80% of trade documents now are processed electronically, APEC has appraised Korea's paperless trade system as at the 'Advanced Level.'
( APEC, "Assessment Report on Paperless Trading of APEC Economies", 2005.9, p.21.)

Reviewing the United Nations' five paperless trade development stages with respect to Korea's global paperless trade strategy, we find

- Those countries in the 1st to 3rd stages have not yet established individual systems for customs clearance, logistics and confirmation of requirements, and even if established, the establishment of a 'Single Window' that integrates related systems has not been completed. Therefore, they can be categorized as countries requiring establishment of a Korean-type paperless trade system.

- Meanwhile, those countries in 4th to 5th stage can provide global paperless trade services through system linkage as they have completed establishment of trade-related systems and a national integrated paperless trade platform.