ISO/IEC/ INTERNATIONAL STANDARD IEEE 21839 First edition 2019-07 Systems and software engineering - System of systems (SoS) considerations in life cycle stages of a system Ingenierie du logiciel et des systemes -Etudes du systeme des systemes (Sds) dans les étapes du cycle de vie d'un systeme ISO IEC Reference number IS0/IEC/IEEE21839:2019(E) IEEE IS0/IEC2019 IEEE2019 IS0/IEC/IEEE21839:2019(E) COPYRIGHTPROTECTED DOCUMENT @ IS0/IEC 2019 @IEEE2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country ofthe requester. ISO copyright office Institute of Electrical and Electronics Engineers, Inc CP 401 : Ch. de Blandonnet 8 3 Park Avenue, New York CH-1214Vernier, Geneva NY10016-5997,USA Tel. +41 22 749 01 11 Fax+41227490947 copyright@iso.org stds.ipr@ieee.org www.iso.org www.ieee.org Published in Switzerland @IS0/IEC 2019-All rights reserved ii @ IEEE 2019 - All rights reserved