Handy Dandy website tools:
https://www.checkli.com checklists (free)
https://trello.com  planboard (free)
https://mail.com (free mail - good antispam filtering
https://MailChimp.com (send well organised mailings
http://www.emlreader.com (mail export *.eml free files reader)
Google Forms

Some info about Azure (by Petri)
https://www.petri.com/choosing-azure-vm-series

admin tools: http://www.baremetalsoft.com/ tail and grep for windows

my preferred monitoring solution: https://newrelic.com/ OR  https://www.microsoft.com/en-us/cloud-platform/system-center 
other solutions are there, like PRTG, Nagios etc. but my preferred choice is newrelic.

Security: EMET has official windows 10 support. Although most details are now incorporated in windows 10 the End Of Live for EMET is prolonged to juli, 2018
get EMET info here https://technet.microsoft.com/en-us/security/jj653751

GDPR (vanaf mei 2018) 
ben je er klaar voor? https://qnh.eu/diensten/gdpr-scan/ en https://www.sophos.com/en-us/lp/compliancecheck.aspx
wat is persoonlijke data? https://autoriteitpersoonsgegevens.nl/nl/over-privacy/persoonsgegevens/wat-zijn-persoonsgegevens  

https://blogs.technet.microsoft.com/markrussinovich/2009/09/29/pushing-the-limits-of-windows-handles/ 

SOC 2 Compliance
https://blog.threatstack.com/not-soc-2-compliant-4-reasons-your-customers-wont-work-with-you