PDF/A

PDF/A is an ISO-standardized (ISO 19005-1) version of the Portable Document Format (PDF) specialized for use in the archiving and long-term preservation of electronic/digital documents.
When generating PDF/A compliant documents, we targeted for the full conformance level of PDF/A-1a! So this means that we are completely compliant with PDF/A-1a and PDF/A-1b (as this is a subset of PDF/A-1a).