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Firebase is Google's mobile platform that helps you quickly develop high-quality apps and grow your business.
nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service.
The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.