Cooperation among  the parliaments of CEI Member States has always been an important part of the CEI operation. The Parliamentary Dimension, along with the Governmental and the Business Dimensions, is positioned as one of the three pillars of the CEI. Throughout the years, the institutional establishment of the Parliamentary Dimension has undergone a process of transformation, which has been formalised with the adoption of the Rules of Procedure of the CEI Parliamentary Dimension.

The Parliamentary Dimension inlcudes several bodies: the Parliamentary Assembly; the Parliamentary Committee; the Standing Committee; the three General Committees (on Political and Home Affairs; on Economic Affairs; on Cultural Affairs); and the Sub-Committee on relations with international and regional parliamentary organisations.

The annual chairmanship of the Parliamentary Dimension rotates according to the annual CEI Presidency
 

regional cooperation for European Integration and sustainable development