1. Mell P, Grance T (2011) The NIST definition of cloud computing. National Institute of Standards and Technology, Special Publication, Gaithersburg, p 800
2. Jignesh S (2017) The 6 multi cloud architecture designer for an effective cloud. https://simform.com/multi-cloud-architecture. Accessed 15 Apr 2018.
3. Cloudenables C (2017) Managing multi-cloud security. https://www.corestack.io/blog/managing-multi-cloud-security. Accessed 22 Feb 2018
4. Robert P, Johnston E (2016) Worldwide cloud 2017 predictions. https://www.idc.com/getdoc.jsp? containerId = US41863916. Accessed 21 Oct 2018
5. Nicole H (2017) Security threats can come from anywhere: the multi-cloud world. http://itprotoday.com/hybrid-cloud/what-it-pros-need-know-about-multi-cloud-security. Accessed 10 Nov 2018