To investigate the functions of the Commission we will use the Treaty again. Read the text below carefully:
1. The Commission shall promote the general interest of the Union and take appropriate initiatives to that end. It shall ensure the application of the Treaties, and of measures adopted by the institutions pursuant to them. It shall oversee the application of Union law under the control of the Court of Justice of the European Union. It shall execute the budget and manage programmes. It shall exercise coordinating, executive and management functions, as laid down in the Treaties. With the exception of the common foreign and security policy, and other cases provided for in the Treaties, it shall ensure the Union’s external representation. It shall initiate the Union’s annual and multiannual programming with a view to achieving interinstitutional agreements.
(Consolidated versions of the Treaty on European Union and the Treaty on the Functioning of the European Union, 2010).