{"id":887,"date":"2019-07-31T11:22:13","date_gmt":"2019-07-31T10:22:13","guid":{"rendered":"http:\/\/www.klaushaller.net\/?page_id=887"},"modified":"2022-03-26T10:29:44","modified_gmt":"2022-03-26T09:29:44","slug":"ea-it-architecture","status":"publish","type":"page","link":"https:\/\/www.klaushaller.net\/?page_id=887","title":{"rendered":"EA &#038; IT Architecture"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"alignright is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.klaushaller.net\/wp-content\/uploads\/2019\/07\/Pixabay_CC0_geralt_monitor-1307227_640.jpg\" alt=\"\" class=\"wp-image-923\" width=\"320\" height=\"226\" srcset=\"https:\/\/www.klaushaller.net\/wp-content\/uploads\/2019\/07\/Pixabay_CC0_geralt_monitor-1307227_640.jpg 640w, https:\/\/www.klaushaller.net\/wp-content\/uploads\/2019\/07\/Pixabay_CC0_geralt_monitor-1307227_640-300x211.jpg 300w, https:\/\/www.klaushaller.net\/wp-content\/uploads\/2019\/07\/Pixabay_CC0_geralt_monitor-1307227_640-624x440.jpg 624w\" sizes=\"auto, (max-width: 320px) 100vw, 320px\" \/><figcaption>Quelle: Pixabay (CC0, geralt, monitor-1307227_640)<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Perfect algorithms and high-quality software are important building blocks for an IT landscape. However, it is the role of enterprise architects, IT and solution architects, and software architects to ensure that the building blocks fit together and that software is developed such maintenance work and feature extensions are possible with a sensible amount of time and effort. My various articles, blog posts, and videos share some insights I gained in more than 14 years\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">An often overlooked topic is standard software for a limited number of customers (solutions): When various software emerge and these versions are not managed adequately, there are no economies of scale for the software vendor. The article&nbsp;<a href=\"http:\/\/www.klaushaller.net\/media\/haller_wsr2010_maintenance_costs.pdf\">Information System Maintenance Costs: The \u201eIn-between\u201c Challenge<\/a>&nbsp;provides details.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This video also provides background information and details on these challenges.<br><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Software Productization &amp; Testing (Reliable Information Systems.TV)\" width=\"625\" height=\"352\" src=\"https:\/\/www.youtube.com\/embed\/f26Rxx6DApM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">When an IT Organization implements new software, there are various pitfalls which result in unnecessary high costs for running and maintaining the software. This video explains you the details.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"3 Tips to keep Application Management Costs low!\" width=\"625\" height=\"352\" src=\"https:\/\/www.youtube.com\/embed\/y9gVmwdHMeA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption>3 Tips to keep Application Management Costs low<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A topic more relevant for software architect is the implementation of upgrades for applications which rely on a database storing their data. The article <em><a rel=\"noreferrer noopener\" aria-label=\"On the Implementation and Correctness of Information System Upgrades (opens in a new tab)\" href=\"http:\/\/www.klaushaller.net\/media\/haller_on_the_implementation_and_correctness_of_information_system_upgrades_icsm2010.pdf\" target=\"_blank\">On the Implementation and Correctness of Information System Upgrades<\/a><\/em> provides insights. A more testing-oriented and shorter article is the following: <em><a rel=\"noreferrer noopener\" aria-label=\"Release Upgrades for Database-Driven Applications: A Quality Assurance Perspective (opens in a new tab)\" href=\"http:\/\/www.klaushaller.net\/media\/haller_te_dec2010.pdf\" target=\"_blank\">Release Upgrades for Database-Driven Applications: A Quality Assurance Perspective<\/a><\/em>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Furthermore, I wrote articles on architectural topics on my LinkedIn blog (in German):<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a rel=\"noreferrer noopener\" href=\"https:\/\/www.linkedin.com\/pulse\/von-it-architekturen-und-it-architekten-klaus-haller\/\" target=\"_blank\">Von IT-Architekturen und IT-Architekten<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"Digitale Strategien und ihr Verh\u00e4ltnis zur IT-Strategie (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/digitale-strategien-und-ihr-verh%C3%A4ltnis-zur-klaus-haller\/\" target=\"_blank\">Digitale Strategien und ihr Verh\u00e4ltnis zur IT-Strategie<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"Die Frage nach dem &quot;Make or Buy&quot; bei Software (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/die-frage-nach-dem-make-buy-bei-software-klaus-haller\/\" target=\"_blank\">Die Frage nach dem &#8220;Make or Buy&#8221; bei Software<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"Wie die Unternehmensstrategie die IT-Strategie beeinflusst (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/wie-die-unternehmensstrategie-it-strategie-klaus-haller\/\" target=\"_blank\">Wie die Unternehmensstrategie die IT-Strategie beeinflusst<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"Was ist eine IT-Strategie? (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/ist-eine-it-strategie-klaus-haller\/\" target=\"_blank\">Was ist eine IT-Strategie?<\/a><\/li><li><a href=\"https:\/\/www.linkedin.com\/pulse\/standardsoftware-evaluieren-und-ausw\u00e4hlen-klaus-haller\/\">Standardsoftware evaluieren und ausw\u00e4hlen<\/a><\/li><li><a href=\"https:\/\/www.linkedin.com\/pulse\/wie-die-digitalisierung-it-abteilungen-ver\u00e4ndert-klaus-haller\/\">Wie die Digitalisierung die IT-Abteilungen ver\u00e4ndert<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"Neue Deployment-Konzepte: Von Kanarienv\u00f6geln und Experimenten mit Usern (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/neue-deployment-konzepte-von-kanarienv\u00f6geln-und-mit-usern-haller\/\" target=\"_blank\">Neue Deployment-Konzepte: Von Kanarienv\u00f6geln und Experimenten mit Usern<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"Das Ende des IT-Helpdesks? Wie neue Konzepte den Support ver\u00e4ndern.\u2028 (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/das-ende-des-it-helpdesks-wie-neue-konzepte-den-support-klaus-haller\/\" target=\"_blank\">Das Ende des IT-Helpdesks? Wie neue Konzepte den Support ver\u00e4ndern.<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"Adressatengerechte Prozessmodellierung\u2028 (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/adressatengerechte-prozessmodellierung-klaus-haller\/\" target=\"_blank\">Adressatengerechte Prozessmodellierung<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"Requirements Engineering und Businessanalyse (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/requirements-engineering-und-businessanalyse-klaus-haller\/\" target=\"_blank\">Requirements Engineering und Businessanalyse<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"IT-Servicedesign: Die Basics\u2028 (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/it-servicedesign-die-basics-klaus-haller\/\" target=\"_blank\">IT-Servicedesign: Die Basics<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"IT-Services und ihre Charakteristiken\u2028 (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/it-services-und-ihre-charakteristiken-klaus-haller\/\" target=\"_blank\">IT-Services und ihre Charakteristiken<\/a><\/li><li><a rel=\"noreferrer noopener\" aria-label=\"Target Operating Modelle in IT-Abteilungen und f\u00fcr IT-Services (opens in a new tab)\" href=\"https:\/\/www.linkedin.com\/pulse\/target-operating-modelle-it-abteilungen-und-f\u00fcr-klaus-haller\/\" target=\"_blank\">Target Operating Modelle in IT-Abteilungen und f\u00fcr IT-Services<\/a><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Perfect algorithms and high-quality software are important building blocks for an IT landscape. However, it is the role of enterprise architects, IT and solution architects, and software architects to ensure that the building blocks fit together and that software is developed such maintenance work and feature extensions are possible with a sensible amount of time [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":3000,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-887","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.klaushaller.net\/index.php?rest_route=\/wp\/v2\/pages\/887","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.klaushaller.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.klaushaller.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.klaushaller.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.klaushaller.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=887"}],"version-history":[{"count":13,"href":"https:\/\/www.klaushaller.net\/index.php?rest_route=\/wp\/v2\/pages\/887\/revisions"}],"predecessor-version":[{"id":1167,"href":"https:\/\/www.klaushaller.net\/index.php?rest_route=\/wp\/v2\/pages\/887\/revisions\/1167"}],"wp:attachment":[{"href":"https:\/\/www.klaushaller.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=887"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}