Storms on US East Coast brought Amazon Web Services down again for a second time in June as they experienced outages this weekend, which caused problems for big names like Pinterest, Netflix and Instagram amongst others. This does lead to questions about the reliability of cloud services. The idea sounds great, but security and reliability issues bring home the need to plan for dark 'Clouds' . Those IT guys may not be redundant just yet. Beware the Plug & Play sales pitch.