Securing Sitecore Topology deployed on Azure web apps(PAAS) using Application Gateway(WAF), Log analytics and Azure Monitor

Primary focus for the blog post would be to setup an Application gateway(WAF enabled) in front of a sitecore content delivery PAAS web app and test Azure WAF functiionality with SQL Injection attack using Log analytics and Azure Monitor(Log alerts) feature. Update: WAF Support for Sitecore is officially available from SItecore 9.1 as mentioned in KB article https://kb.sitecore.net/articles/682999 Sitecore environments