What can go wrong regarding the Software as a Service in cloud
computing, as a developer you are trusting that the data is secured and
available, although networks have to stick to the 99.999% availability
agreement, it’s not always likely that the software will be available when
the network is down which is something to consider when utilizing this
service, as one of the many issues to consider that can occur, security of
the data is also something to consider which can also be at risk as well.
One of the main things to be aware of is availability. There was a time
when AWS was down it effected companies and users that uses AWS
SaaS.
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https://www.investopedia.com/amazon-web-services-outage-causes-
chaos-5212233
