{"id":168509,"date":"2026-01-28T16:52:36","date_gmt":"2026-01-28T15:52:36","guid":{"rendered":"https:\/\/liora.io\/en\/?p=168509"},"modified":"2026-02-06T07:19:39","modified_gmt":"2026-02-06T06:19:39","slug":"all-about-ci-cd","status":"publish","type":"post","link":"https:\/\/liora.io\/en\/all-about-ci-cd","title":{"rendered":"CI\/CD : Everything about these principles that helps tech teams"},"content":{"rendered":"<style><br \/>\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style>\n<p><strong>Continuous Integration (CI) and Continuous Delivery (CD) are a set of principles and practices that enable development teams to make changes to software code more reliably and more frequently.\nThe implementation of CI\/CD is at the heart of agile and DevOps development methodologies. It enables software development teams to focus on business needs, code quality, and cybersecurity. Deployment steps are automated.<\/strong><\/p>\n<h2 class=\"wp-block-heading\" id=\"h-what-is-ci-cd\">What is CI \/ CD ?<\/h2>\nContinuous Integration is a philosophy and a set of practices whereby development teams implement changes progressively, and frequently check the code before adding to it.\n\nModern applications rely on <b>different tools and code platforms<\/b>. Consequently, teams need a mechanism for integrating and validating changes.\n\nContinuous Integration aims to provide an automated way of building and testing applications. The consistency of the<b> integration process<\/b> enables teams to make changes to the code more frequently. This improves collaboration, as well as the final quality of the software.\n\nContinuous Delivery or CD is the next step. It automates the <b>delivery of applications<\/b> to selected infrastructure environments. Here again, the aim is to <b>harmonize code delivery<\/b> between the various production, development, and testing environments on which most development teams work simultaneously.\n\nCI\/CD tools are used to store parameters specific to each environment, and automation then enables the necessary calls to be made to web servers, databases, and other services requiring procedures such as restarting during application deployment.\n\nContinuous Integration and Continuous Delivery require <b>Continuous Testing<\/b>. This procedure ensures that code and application quality are maintained.\n<h2 class=\"wp-block-heading\" id=\"h-how-does-ci-work\">How does CI work?<\/h2>\nThe Continuous Integration philosophy is based on mechanisms and automation. Developers frequently deposit their code in a version control folder, to simplify the detection of defects and other quality issues in small chunks of code. This approach also reduces the risk of several developers editing the same code simultaneously.\n\nVarious techniques are used by <b>CI development teams<\/b> to control code and functionality. These include Feature Flags and Version Control Branching. After this validation stage, the code is sent to production.\n\nThe build process is automated by packaging all software, databases, and other components. Test execution is also automated, to provide feedback to developers on changes made to the code.\n\nMany CI\/CD tools allow developers to create builds on demand, by <b>dropping code into the version control folder<\/b> or on a defined date. The integration strategy needs to be discussed by the team, particularly about the frequency of builds and code deposits.\n\n<style><br \/>\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"673\" height=\"400\" src=\"https:\/\/liora.io\/app\/uploads\/sites\/9\/2023\/06\/Capture-decran-2023-06-09-115933.png\" alt=\"CI_CD_1\" loading=\"lazy\" srcset=\"https:\/\/liora.io\/app\/uploads\/sites\/9\/2023\/06\/Capture-decran-2023-06-09-115933.png 673w, https:\/\/liora.io\/app\/uploads\/sites\/9\/2023\/06\/Capture-decran-2023-06-09-115933-300x178.png 300w\" sizes=\"(max-width: 673px) 100vw, 673px\">\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex is-content-justification-center\"><div class=\"wp-block-button \"><a class=\"wp-block-button__link wp-element-button \" href=\"\/en\/courses\/data-ai\/data-engineer\">Learn to handle CI\/CD principles<\/a><\/div><\/div>\n\n<h2 class=\"wp-block-heading\" id=\"h-how-does-cd-work\">How does CD work?<\/h2>\nContinuous Delivery automates the &#8220;push&#8221; of applications to delivery environments. Tools such as Jenkins, CircleCI, AWS CodeBuild, Azure DevOps, or Atlassian Bamboo automate the testing and evaluation of application changes.\n\nTypically, the <b>Continuous Delivery pipeline<\/b> is broken down into build, test, and deployment stages. Additional steps can be added, such as extracting code from the version control folder, transferring code, pushing application components to the appropriate services, or <b>continuous testing<\/b>.\n\nIn <b>Cloud environments<\/b>, CI\/CD pipelines also make use of software containers like <a href=\"https:\/\/liora.io\/en\/docker-definition-and-tutorial\">Docker <\/a>and orchestration systems like <b>Kubernetes<\/b>. <b>Serverless architectures<\/b> are also widely used and involve letting the Cloud service provider manage the infrastructure. The application consumes resources according to its needs.\n<h2 class=\"wp-block-heading\" id=\"h-what-are-the-advantages-of-ci-cd\">What are the advantages of CI \/ CD?<\/h2>\nContinuous integration and delivery mean greater collaboration and productivity. Code quality is improved thanks to better control, and the quality of the final software is also enhanced.\n\nIn addition, CI\/CD pipelines enable companies to frequently enhance their applications while relying on a <b>reliable delivery process<\/b>. Standardized builds, testing, and automated deployment let teams focus on improving applications rather than on technical details.\n\nThis practice is ideal for the <b>DevOps method<\/b>, as it avoids misalignment between developers wishing to push code too frequently and ops teams seeking application stability. Automation enables code changes to be pushed more frequently, while <b>standardized configurations<\/b> and continuous testing improve stability.\n<h2 class=\"wp-block-heading\" id=\"h-ci-cd-and-data-science\">CI \/ CD and Data Science<\/h2>\nAs in software development, CI\/CD is used in <a href=\"https:\/\/liora.io\/en\/data-science-definition-issues-and-use-cases\">Data Science<\/a> to transfer data to production. This approach enables automatic deployment.\n\nData Science processes are built by different experts working together, such as Data Engineers, Machine Learning experts, and visualization specialists. They involve applying <a href=\"https:\/\/liora.io\/en\/machine-learning-what-is-it-and-why-does-it-change-the-world\">Machine Learning algorithms<\/a> to data.\n\nIn this field, integration generally involves assembling the underlying parts. This ensures that the libraries of a specific toolkit or the correct versions of a module are included in the final data science process.\n\nDuring development, functions are generated and the model is trained. During integration, the <b>optimized function generation process<\/b> is combined with the trained model. Integration also includes the production process.\n\nContinuous deployment in Data Science is similar to that in <b>software development<\/b> and consists of automatically replacing an existing application or API. This includes the ability to restore a previous version in the event of a problem during production.\n\nDuring the Data Science production process, model performance must be continuously monitored. Change detection is crucial, and must be ensured by mechanisms. Models can then be automatically re-trained and redeployed, while the Data Science team can be alerted to create a new process.\n<h2 class=\"wp-block-heading\" id=\"h-git-and-github\">Git and GitHub<\/h2>\nVersion control is at the heart of the CI \/ CD approach. It consists of saving any changes made to a software development or <b>Data Science project<\/b> so that you can go back in time in the event of an error or problem. It is always possible to restore a previous version.\n\nDeveloped in 2005,<b> Git <\/b>is an extremely popular version <b>control system<\/b>. Installed and maintained on a local system, it enables versions to be saved without the need for Internet access.\n\nThe system stands out for its responsiveness, ease of use, and free price. It works particularly well with text files such as <b>computer code<\/b>. Its real strength, however, lies in its branching model, enabling independent local branches to be created within the code. This makes it possible to test new ideas without necessarily putting them into production.\n\nThe <a href=\"https:\/\/liora.io\/en\/github-what-is-it\">GitHub code hosting<\/a> and repository service enables Git version control projects to be shared online, beyond the local computer or server. The service is entirely cloud-based.\n\nGitHub&#8217;s graphical user interface is extremely intuitive and offers native task management and control tools for programmers. A marketplace enables additional functionalities to be implemented.\n\nThe GitHub service lets you <b>share code and collaborate with other users<\/b> on the same software or data science project. Each change introduced creates a new branch, so each team member can work simultaneously without interfering with the progress of others.\n\n<img decoding=\"async\" width=\"800\" height=\"383\" src=\"https:\/\/liora.io\/app\/uploads\/sites\/9\/2023\/06\/Data_engineer_training-1024x490.png\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/liora.io\/app\/uploads\/sites\/9\/2023\/06\/Data_engineer_training-1024x490.png 1024w, https:\/\/liora.io\/app\/uploads\/sites\/9\/2023\/06\/Data_engineer_training-300x144.png 300w, https:\/\/liora.io\/app\/uploads\/sites\/9\/2023\/06\/Data_engineer_training-768x367.png 768w, https:\/\/liora.io\/app\/uploads\/sites\/9\/2023\/06\/Data_engineer_training.png 1271w\" sizes=\"(max-width: 800px) 100vw, 800px\">\n<h2 class=\"wp-block-heading\" id=\"h-how-can-i-learn-about-ci-cd\">How can I learn about CI \/ CD?<\/h2>\nContinuous integration and continuous delivery are now widely used in business, for software development or Data Science. It&#8217;s a highly sought-after business skill. To master CI \/ CD, you can choose Liora.\n\n<a href=\"\/en\/courses\/data-ai\/data-engineer\">Our Data Engineer course<\/a> includes a CI \/ CD module covering Git, GitHub, and quality assurance. Other modules cover Python programming, databases, data science, Big Data, automation, and deployment.\n\nUpon completion of the program, you will have all the skills required to become a Data Engineer. You&#8217;ll be able to store, transform and transmit large volumes of data, deploy <a href=\"https:\/\/liora.io\/en\/machine-learning-what-is-it-and-why-does-it-change-the-world\">Machine Learning models<\/a> for production use, and create streaming data processing pipelines.\n\nThis distance learning course can be completed in a 9-month Continuing Education program, or an intensive 11-week BootCamp mode. Our <a href=\"https:\/\/liora.io\/en\/blended-learning-the-new-successful-training-method\">Blended Learning approach<\/a> combines individual coaching on our online platform and Masterclass.\n\nFinishing this training leads to a <b>certificate issued by the University Paris La Sorbonne<\/b> as part of our partnership. 80% of our alumni have found immediate employment.\n\nThis training is accessible with a Bac+3 in mathematics or Bac+5 in science, as well as an understanding of <a href=\"https:\/\/liora.io\/en\/sql-learn-all-about-the-programming-language-for-databases\">SQL language<\/a> and <a href=\"https:\/\/liora.io\/en\/linux-the-preferred-os-for-developers\">Linux systems<\/a>. As far as financing is concerned, all our training courses are eligible for the CPF. Don&#8217;t wait any longer and discover our Data Engineer training!\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex is-content-justification-center\"><div class=\"wp-block-button \"><a class=\"wp-block-button__link wp-element-button \" href=\"\/en\/courses\/data-ai\/data-engineer\">Know more about our Data Engineer training<\/a><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Continuous Integration (CI) and Continuous Delivery (CD) are a set of principles and practices that enable development teams to make changes to software code more reliably and more frequently. The implementation of CI\/CD is at the heart of agile and DevOps development methodologies. It enables software development teams to focus on business needs, code quality, and cybersecurity. Deployment steps are automated.<\/p>\n","protected":false},"author":85,"featured_media":168561,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_acf_changed":false,"editor_notices":[],"footnotes":""},"categories":[2434],"class_list":["post-168509","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cloud-dev"],"acf":[],"_links":{"self":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts\/168509","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/users\/85"}],"replies":[{"embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/comments?post=168509"}],"version-history":[{"count":3,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts\/168509\/revisions"}],"predecessor-version":[{"id":205282,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts\/168509\/revisions\/205282"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/media\/168561"}],"wp:attachment":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/media?parent=168509"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/categories?post=168509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}