The Purpose Of This Procedure Is To Contract The Necessary Services For The Creation Of Electronic Data Collection Notebooks (Ecrd) Through An Online Platform With The Most Innovative Technology And The Most Intuitive Design, For The Collection Of Data In Any Type Of Clinical Trial, From Small Observational Studies To Large And Complex Clinical Trials, To Be Able To Carry Out The Management And Development Of Clinical Trials Carried Out In The Clinical Research And Clinical Trials Unit Of The La Paz University Hospital In Madrid. These Services Must Comply With The Requirements Set By The European Research Network Ecrin (European Clinical Research Infrastructure Network).