Long-term archiving: a good read about PDF/A

What's the deal with PDF/A?
Originally designated PDF/A-1, this standardized version of the conventional PDF format was established as the international standard ISO 19005-1 in late 2005 and has been available as an ISO standard in its extended versions PDF/A-2 and PDF/A-3 since July 2011 and October 2012 respectively. Since that time, and for a great many businesses, the PDF/A format has provided a basis for long-term archiving that is as uncomplicated as it is secure. The unbeatable advantage of this file format is that the documents themselves contain all the elements needed for reproduction.
