In a nutshell:
Outsourcing parts of your business to an external cloud service does not immunize your company from patent infringement liability. Most cloud providers offer measures to shield their customers from patent infringement claims, but it’s worthwhile to compare their terms and conditions.
If you can read German, feel free to check out the full article here: http://www.cloudmagazin.com/2018/02/22/patentverletzung-in-der-cloud/
P.S.: This was just the tip of the iceberg. If you want more, get on my email list. I usually write an update every two weeks or so – it features inside knowledge and practical tips on European software patents: