Google Analytics is a service offered by Google that generates detailed statistics about a website's traffic and traffic sources and measures conversions and sales. Google Analytics can track visitors from all referrers, including search engines and social networks, direct visits and referring sites. It also displays advertisin...
ScorecardResearch is service of Full Circle Studies, Inc., is part of the comScore, Inc. market research community, a leading global market research effort that studies and reports on Internet trends and behavior. Here are all the website that put a pixel of Scorecard Research
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.
Meta descriptions are HTML attributes that provide concise explanations of the contents of web pages. Meta descriptions are commonly used on search engine result pages (SERPs) to display preview snippets for a given page.