Synchrona has more than 30 years of experience in SAS® development and data analysis using SAS. Synchrona is using SAS extensively, also in airline business planning and network analysis projects.

Erik Tilanus wrote the book "Werken met SAS" (Dutch language), which has also been published in English as  "Working with the SAS System" by SAS Press. This first edition is now out of print. In 2012 a completely revised Dutch edition has been published. (See separate story) 

Erik is also a frequent contributor to the SAS Global Forum.