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Site Info - Cancer.gov
Overview of web technologies used by Cancer.gov.
Comprehensive Cancer Information - National Cancer InstituteAccurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.
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Drupal is an open source content management system written in PHP, originally developed by Dries Buytaert.
PHP is a popular scripting language for creating web pages.
Microsoft's Active Server Pages technology on the .NET framework.
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.
JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.
GIF (Graphics Interchange Format) is a lossless compression image format, originally introduced by CompuServe and suitable to store graphics, logos and simple animations.
Scalable Vector Graphics (SVG) is an XML-based vector image format.
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.
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 Internet Protocol version 6 (IPv6) provides amongst others a vastly larger address space than the preceding version 4. We consider a website to support IPv6 if a 128-bit address is assigned to it, regardless of the content delivered at that address.
HTTP/2 is the second major version of the HTTP network protocol.
HTTP Strict Transport Security (HSTS) defines a mechanism enabling web sites to declare themselves accessible only via secure connections.
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/.
The Open Graph protocol, originally developed by Facebook, is an RDFa-based format that enables any web page to become a rich object in a social graph.
Twitter Cards enable automatic attachment of photos, videos and media elements to Tweets.
DigiCert is an SSL certificate authority. This includes Verizon, whose Enterprise SSL Business has been acquired by DigiCert.
New Relic is a web application performance management tool.
Adobe DTM (Dynamic Tag Management) is a tag management system by Adobe. This includes Satellite, previously owned by Search Discovery, and Adobe TagManager.
Nginx (pronounced as "engine X") is a lightweight open source web server developed by Igor Sysoev.
The Internet Information Services (IIS) are a set of Internet-based services for Windows, developed by Microsoft.
Windows is a popular operating system produced by Microsoft.
Akamai is a content delivery network.
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