A Single License grants license rights for a single ECLASS Release.
It includes both export formats for the release – that is, both ECLASS BASIC and ECLASS ADVANCED – as well as all available languages.
A Concordance License includes all* ECLASS Releases and all* Update Files.
It also includes both export formats for the release – both ECLASS BASIC and ECLASS ADVANCED – as well as all available languages. The Concordance License has a minimum term of validity of three years.
This type of license is advantageous for you if you need more than one ECLASS Release.
*all = all already-published releases and update files, as well as all future releases and update files published during the Concordance License’s term of validity.