{"id":98350,"date":"2024-07-15T18:45:58","date_gmt":"2024-07-15T16:45:58","guid":{"rendered":"https:\/\/firstcolo.blackpeppers.de\/glossary\/wan-wide-area-network\/"},"modified":"2026-03-12T23:54:05","modified_gmt":"2026-03-12T22:54:05","slug":"wan-wide-area-network","status":"publish","type":"glossary","link":"https:\/\/firstcolo.blackpeppers.de\/en\/glossary\/wan-wide-area-network\/","title":{"rendered":"WAN (Wide Area Network)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"98350\" class=\"elementor elementor-98350 elementor-54891\" data-elementor-post-type=\"glossary\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5f81206 e-flex e-con-boxed e-con e-parent\" data-id=\"5f81206\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-feda5c4 e-con-full e-flex e-con e-child\" data-id=\"feda5c4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-63088550 e-con-full e-flex e-con e-child\" data-id=\"63088550\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-4f8a7e04 e-con-full e-flex e-con e-child\" data-id=\"4f8a7e04\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-183f3fe4 elementor-widget elementor-widget-heading\" data-id=\"183f3fe4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">What is a Wide Area Network (WAN)?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-272fa10f elementor-widget elementor-widget-text-editor\" data-id=\"272fa10f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>A Wide Area Network (WAN) is a <a href=\"https:\/\/firstcolo.blackpeppers.de\/glossar\/netzwerk\" target=\"_blank\" rel=\"noopener\">network<\/a> that covers large geographic areas such as an entire country or continent, extending to global connections. WANs connect smaller networks such as Local Area Networks (<a href=\"https:\/\/firstcolo.blackpeppers.de\/glossar\/lan\" target=\"_blank\" rel=\"noopener\">LANs<\/a>) and Metropolitan Area Networks (<a href=\"https:\/\/firstcolo.blackpeppers.de\/glossar\/man\" target=\"_blank\" rel=\"noopener\">MANs<\/a>), enabling communication and data transmission over long distances. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-35ff2c31 e-flex e-con-boxed e-con e-parent\" data-id=\"35ff2c31\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-66119853 elementor-widget elementor-widget-heading\" data-id=\"66119853\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Applications of Wide Area Networks<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5aa3506e elementor-widget elementor-widget-text-editor\" data-id=\"5aa3506e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Wide Area Networks utilize various technologies and transmission media, including satellite connections, leased lines, and the internet to connect networks. They play a crucial role in global data communication. Companies with locations in different cities or countries use WANs to connect their networks, enabling real-time collaboration. The internet is the world&#8217;s largest WAN, connecting billions of devices worldwide.   <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f03982 elementor-widget elementor-widget-heading\" data-id=\"2f03982\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Use Cases for Wide Area Networks<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-514da4c elementor-widget elementor-widget-text-editor\" data-id=\"514da4c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Wide Area Networks are used in various areas: <\/p><ul><li>In corporate networks, they link different company locations to optimize information flow and resource utilization.<\/li><li>For banks and financial institutions, WANs secure transactions and connect branches and ATMs.<\/li><li>In educational institutions, they connect campus networks and provide distance learning opportunities.<\/li><li>As government networks, WANs enable secure communication and information exchange between different agencies.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e6be778 elementor-widget elementor-widget-heading\" data-id=\"e6be778\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Challenges and Optimizations<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e06ac7f elementor-widget elementor-widget-text-editor\" data-id=\"e06ac7f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Wide Area Networks face challenges such as bandwidth limitations, high latency, and network security. Solutions such as SD-WAN and WAN optimization techniques like data compression and caching can help address these issues. Additionally, implementing security measures such as VPNs, firewalls, and conducting regular security audits is crucial to ensure data integrity and confidentiality.  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-501a31da e-con-full e-flex e-con e-child\" data-id=\"501a31da\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-61ee9486 elementor-widget elementor-widget-button\" data-id=\"61ee9486\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Home<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6011585e elementor-widget elementor-widget-button\" data-id=\"6011585e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/firstcolo.blackpeppers.de\/en\/knowledge\/glossary\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Glossary<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-47334f4 e-con-full e-flex e-con e-child\" data-id=\"47334f4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d908024 elementor-widget elementor-widget-heading\" data-id=\"d908024\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Refactoring \u2013 Briefly Explained<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54c1f78 elementor-widget elementor-widget-text-editor\" data-id=\"54c1f78\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Refactoring is the &#8220;restructuring&#8221; strategy:<br>more effort than rehosting, but better cloud fitness and often lower operational risk in the long term.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0af2771 elementor-widget elementor-widget-heading\" data-id=\"0af2771\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What objective does refactoring pursue in the context of cloud migration?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1f1e153 elementor-widget elementor-widget-text-editor\" data-id=\"1f1e153\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>In the context of cloud migration, this strategy refers to adapting code or architecture without completely redeveloping the application. The goal is to modernize existing systems so they can be operated stably and efficiently in a cloud environment. <\/p><p>Core functions of the application are preserved while technical structures are revised to enable better utilization of cloud resources.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-05c3f59 elementor-widget elementor-widget-heading\" data-id=\"05c3f59\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why is refactoring used?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-34f04b6 elementor-widget elementor-widget-text-editor\" data-id=\"34f04b6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Refactoring is employed when a pure migration to the cloud is insufficient to achieve desired improvements. Many applications were originally developed for traditional on-premise infrastructures and are not optimized for cloud operation. <\/p><p>Through refactoring, companies can:<\/p><ul><li>Reduce performance bottlenecks<\/li><li>Utilize cloud resources more efficiently<\/li><li>Improve application scalability<\/li><li>Stabilize long-term cloud operations<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5524585 elementor-widget elementor-widget-heading\" data-id=\"5524585\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Distinction from Rehosting<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c4142d elementor-widget elementor-widget-text-editor\" data-id=\"4c4142d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Compared to rehosting, refactoring pursues a more comprehensive approach:<\/p><h3>Rehosting (&#8220;Lift and Shift&#8221;)<\/h3><p>Application is moved to the cloud with virtually no changes<\/p><ul><li>Low adaptation effort<\/li><li>Limited utilization of cloud benefits<\/li><\/ul><h3>Refactoring<\/h3><ul><li>Targeted changes to code or architecture<\/li><li>Higher effort than rehosting<\/li><li>Better adaptation to cloud requirements<\/li><\/ul><p>It is particularly suitable when companies aim for more than just an infrastructure change.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6ea803 elementor-widget elementor-widget-heading\" data-id=\"d6ea803\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Typical Measures in Refactoring<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bc494a3 elementor-widget elementor-widget-text-editor\" data-id=\"bc494a3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>During refactoring in the context of cloud migration, the following adaptations are made, among others:<\/p><ul><li>Optimization of application components for better scalability<\/li><li>Reduction of tight dependencies within the application<\/li><li>Adaptation to distributed cloud environments<\/li><li>Preparation for automated deployment and operations<\/li><\/ul><p> <\/p><p>These measures are implemented in a controlled and gradual manner to minimize risks.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ddfba81 elementor-widget elementor-widget-heading\" data-id=\"ddfba81\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Benefits of Refactoring in Cloud Migration<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-60ce2e8 elementor-widget elementor-widget-text-editor\" data-id=\"60ce2e8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>It offers several advantages over an unchanged migration:<\/p><ul><li>Improved performance through cloud-appropriate structures<\/li><li>More efficient resource utilization, which can reduce operating costs<\/li><li>Higher stability in ongoing cloud operations<\/li><li>Better foundation for future optimizations<\/li><\/ul><p>Thus, refactoring represents a middle ground between rapid migration and complete redevelopment.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c04f488 elementor-widget elementor-widget-heading\" data-id=\"c04f488\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Challenges in Refactoring<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f87e56c elementor-widget elementor-widget-text-editor\" data-id=\"f87e56c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Despite the benefits, refactoring involves additional effort. It requires: <\/p><ul><li>Detailed analysis of the existing application<\/li><li>Technical expertise in cloud architectures<\/li><li>Careful planning to avoid unwanted side effects<\/li><\/ul><p>For this reason, this strategy is typically applied selectively to applications where the additional effort pays off in the long term.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e36662a elementor-widget elementor-widget-heading\" data-id=\"e36662a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e36c9be elementor-widget elementor-widget-text-editor\" data-id=\"e36c9be\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Refactoring is an effective strategy within cloud migration when applications are not only to be moved to the cloud but sustainably improved. Through targeted adaptations, cloud benefits can be better utilized without incurring the effort of complete redevelopment. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9512cf2 e-con-full e-flex e-con e-child\" data-id=\"9512cf2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-379994c elementor-widget elementor-widget-button\" data-id=\"379994c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Home<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-515b10a elementor-widget elementor-widget-button\" data-id=\"515b10a\" 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continent.<\/p>\n","protected":false},"author":43,"featured_media":97354,"menu_order":0,"template":"","meta":{"content-type":"","footnotes":""},"glossary-categories":[],"glossary-tags":[],"class_list":["post-98350","glossary","type-glossary","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Wide Area Network (WAN) | firstcolo Glossary<\/title>\n<meta name=\"description\" content=\"A Wide Area Network (WAN) is a network that covers large geographic areas such as an entire country or continent.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"WAN (Wide Area Network)\" \/>\n<meta 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