The Inversion Lab (iLab) is an SME that was founded in January 2015 by Dr. Thomas Kaminski. Mr. Michael Voßbeck is with the company from the beginning. The permanent staff is complemented by a number of senior researches working as freelancers for individual projects. The company focuses on the development and application of advanced software systems for retrieval, data assimilation and inverse problems in general. In this area the team has gathered over 20 years of experience at various scientific institutions and companies. iLab operates the JRC-Twostream Inversion Package (JRC-TIP), an advanced retrieval system which they apply to generate biogeophysical land surface products with uncertainty ranges from site to global scales. iLab is a member of the teams of the GreenHouse Gas (GHG) and Sea Ice (SI) projects of ESA's Climate Change Initiative (CCI), and was on the study team for ESA's OPTIRAD project. iLab is leading the SMOS+VEG study (funded by ESA's Support to Science Element), which demonstrates the synergetic use of soil moisture and vegetation products in a carbon cycle data assimilation system (CCDAS).