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JavaScript is a lightweight, object-oriented, cross-platform scripting language, often used within web pages.

The Apache HTTP Server is an open source web server by the Apache Software Foundation.

Amazon is a US-based e-commerce and cloud computing provider.

Alibaba a Chinese e-commerce and cloud computing company.

China Telecom (China Telecommunications Corporation) is a Chinese state-owned telecommunication company.

China Unicom (formerly China Netcom) is a Chinese telecom operator, also offering web hosting services.

Amazon is a US-based e-commerce and cloud computing provider.

Alibaba a Chinese e-commerce and cloud computing company.

China Telecom (China Telecommunications Corporation) is a Chinese state-owned telecommunication company.

China Unicom (formerly China Netcom) is a Chinese telecom operator, also offering web hosting services.

The validity of the SSL certificate has expired.

DigiCert is an SSL certificate authority. This includes Verizon, whose Enterprise SSL Business has been acquired by DigiCert.

Umeng is a Chinese provider of online web traffic statistics, formerly operating under the name CNZZ.

External Cascading Style Sheets define style rules in a separate CSS file.

Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.

Gzip (GNU zip) is a file compression algorithm.

A strong ETag is an HTTP header field for validation of cached web pages, that indicates a byte-for-byte identical page in the cache.

The websites redirects visitors to its www subdomain, e.g. from example.com to www.example.com.

The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.

HTML5 is the fifth revision of the HTML standard.

UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.

PNG (Portable Network Graphics) is a lossless compression image format, suitable to store graphics with uniformly colored areas, and originally introduced as a free, open-source successor of GIF.

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