-Introduction à ADAO
-+++++++++++++++++++
+.. _section_intro:
-todo
+================================================================================
+Introduction to ADAO
+================================================================================
+
+The aim of the ADAO module is **to help using data assimilation or optimization
+methodology in conjunction with other modules in SALOME**. The ADAO module
+provides interface to some standard algorithms of data assimilation or
+optimization, and allows integration of them in a SALOME study. Calculation or
+simulation modules have to provide one or more specific calling methods in order
+to ba callable in the SALOME/ADAO framework, and all the SALOME modules can be
+used throught YACS integration of ADAO.
+
+Its main objective is to *facilitate the use of various standard data
+assimilation or optimization methods*, while remaining easy to use and providing
+a path to help the implementation. The module covers a wide variety of practical
+applications in a robust way, allowing real engineering applications but also
+quick experimental setup to be performed. Its methodological and numerical
+scalability gives way to extend the application domain.
