{"id":537506,"date":"2024-05-30T10:50:30","date_gmt":"2024-05-30T08:50:30","guid":{"rendered":"https:\/\/www.capgemini.com\/se-en\/?p=537506&#038;preview=true&#038;preview_id=537506"},"modified":"2025-03-13T07:55:34","modified_gmt":"2025-03-13T06:55:34","slug":"site-reliability-engineering-101-ensuring-the-reliability-of-your-it-system","status":"publish","type":"post","link":"https:\/\/www.capgemini.com\/se-en\/insights\/expert-perspectives\/site-reliability-engineering-101-ensuring-the-reliability-of-your-it-system\/","title":{"rendered":"Site reliability engineering 101: Ensuring the reliability of your IT system"},"content":{"rendered":"\n<header class=\"wp-block-cg-blocks-hero-blogs header-hero-blogs\"><div class=\"container\"><div class=\"hero-blogs\"><div class=\"hero-blogs-content-wrapper\"><div class=\"row\"><div class=\"col-12\"><div class=\"header-title\"><h1>Site reliability engineering 101: Ensuring the reliability of your IT system<\/h1><\/div><\/div><\/div><\/div><div class=\"hero-blogs-bottom\"><div class=\"header-author\"><div class=\"author-img\"><img decoding=\"async\" src=\"https:\/\/www.capgemini.com\/se-en\/wp-content\/uploads\/sites\/20\/2022\/09\/aliasgar_muchhala-1.jpg?w=200&amp;quality=10\" alt=\"\" loading=\"lazy\"\/><\/div><div class=\"author-name-date\"><h5 class=\"author-name\">Aliasgar Muchhala<\/h5><h5 class=\"blog-date\">30th May 2024<\/h5><\/div><\/div><div class=\"brand-image\"> <\/div><\/div><\/div><\/div><\/header>\n\n\n\n<section class=\"wp-block-cg-blocks-group undefined section section--article-content\"><div class=\"article-main-content\"><div class=\"container\"><div class=\"row\"><div class=\"col-12 col-md-1\"><nav class=\"article-social\"><ul class=\"social-nav\"><li class=\"ip-order-fb\"><a href=\"https:\/\/www.facebook.com\/sharer\/sharer.php?u=https:\/\/www.capgemini.com\/insights\/expert-perspectives\/how-to-safeguard-and-protect-our-global-forest-ecosystems\/\" target=\"_blank\" rel=\"noopener noreferrer\" title=\"opens in a new window\"><i aria-hidden=\"true\" class=\"icon-fb\"><\/i><span class=\"sr-only\">Facebook<\/span><\/a><\/li><li class=\"ip-order-tw\"><a href=\"https:\/\/twitter.com\/intent\/tweet?url=https:\/\/www.capgemini.com\/insights\/expert-perspectives\/how-to-safeguard-and-protect-our-global-forest-ecosystems\/&amp;text=How%20to%20safeguard%20and%20protect%20our%20global%20forest%20ecosystems%3F%C2%A0\" target=\"_blank\" rel=\"noopener noreferrer\" title=\"opens in a new window\"><i aria-hidden=\"true\" class=\"icon-tw\"><\/i><span class=\"sr-only\">Twitter<\/span><\/a><\/li><li class=\"ip-order-li\"><a href=\"https:\/\/www.linkedin.com\/shareArticle?url=https:\/\/www.capgemini.com\/insights\/expert-perspectives\/how-to-safeguard-and-protect-our-global-forest-ecosystems\/&amp;text=How%20to%20safeguard%20and%20protect%20our%20global%20forest%20ecosystems%3F%C2%A0\" target=\"_blank\" rel=\"noopener noreferrer\" title=\"opens in a new window\"><i aria-hidden=\"true\" class=\"icon-li\"><\/i><span class=\"sr-only\">Linkedin<\/span><\/a><\/li><\/ul><\/nav><\/div><div class=\"col-12 col-md-11 col-lg-10\"><div class=\"article-text article-quote-text\">\n<h3 class=\"wp-block-heading has-black-color has-text-color\" id=\"h-in-simple-terms-reliability-is-defined-as-the-probability-of-success-however-in-the-application-world-reliability-is-talked-about-in-terms-of-availability-and-measured-in-the-context-of-the-frequency-of-failures\">In simple terms, reliability is defined as the probability of success. However, in the application world, reliability is talked about in terms of availability and measured in the context of the frequency of failures.<\/h3>\n\n\n\n<p>Reliability is important as it can help build or lose confidence in a product and an organization\u2019s brand reputation.<\/p>\n\n\n\n<p>In the current IT landscape, which is complex, multi-layered, and cloud-based, the traditional approach to preventing system failures doesn\u2019t quite work.&nbsp;&nbsp;<\/p>\n\n\n\n<p>With so many moving parts, there are bound to be disruptions that result in failures. This requires a change in mindset to expect failures, and to build systems that are resilient to these failures. Site reliability Engineering (SRE), also known as service reliability engineering, is the approach you need to anticipate and recover from failures.<\/p>\n\n\n\n<p>SRE applies a software engineering mindset to system administration. As a software engineer, you look at the business requirements and develop the system aligned to those requirements. Likewise, a Site Reliability engineer needs to look at how each disruption can affect the business requirement and then find a solution for it accordingly.<\/p>\n\n\n\n<p>An Agile-focused, product-driven approach and IT\/OT integration have been key drivers for the growing demand for SRE today.&nbsp;<\/p>\n\n\n\n<p>SRE began at Google around 2003 as a method to ensure Google\u2019s website remained \u201cas available as possible.\u201d The team responsible for site availability applied software engineering concepts to system administration methods, which later formed the basic tenets of SRE, as described in an\u202f<a href=\"https:\/\/landing.google.com\/sre\/books\/\" target=\"_blank\" rel=\"noreferrer noopener\">online book<\/a>\u202fpublished by Google.<\/p>\n\n\n\n<p>Like most enterprise constructs, businesses don&#8217;t need to mimic the same methods used by Google. While we need to assess these practices in the context of the enterprise, there are certain basic tenets of SRE that must be followed:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Agree upon a set of service-level indicators (SLIs) and service-level objectives (SLOs) to understand the targets and measures<\/li>\n\n\n\n<li>Accept failure as normal and manage an \u201cerror budget\u201d that is used to strike a balance between system updates and system stability<\/li>\n\n\n\n<li>Understand that the site reliability engineers are neither part of the development team nor the operations team. It needs a separate central team that takes the end-to-end across apps, infra, backend, frontend, middleware, etc.<\/li>\n\n\n\n<li>Automate processes. A key objective of SRE is to \u201creduce toil.\u201d<\/li>\n<\/ul>\n\n\n\n<p>Does this sound familiar? A bit like DevOps, perhaps? Then click <a href=\"https:\/\/www.capgemini.com\/devops-and-sre-where-agility-meets-reliability\/\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a> to read our next post on how SRE is different from DevOps.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/section>\n\n\n\n<section class=\"wp-block-cg-blocks-wrapper-people-slider section section--expert-slider wrapper-people-slider undefined\"><div class=\"container\"><div class=\"content-title\"><h3 data-maxlength=\"34\">Author<\/h3><\/div><\/div><div class=\"slider slider-boxed\"><div class=\"container\"><div class=\"slider-window\"><div class=\"slider-list\">\n\t\t<div class=\"slide\">\n\t\t\t<div class=\"box\">\n\t\t\t\t<div class=\"row\">\n\t\t\t\t\t<div class=\"col-md-6 col-lg-4 box-img-wrapper\">\n\t\t\t\t\t\t<img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.capgemini.com\/se-en\/wp-content\/uploads\/sites\/20\/2022\/09\/aliasgar_muchhala-1.jpg\" alt=\"Aliasgar Muchhala\"\/>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"col-md-6 col-lg-8 box-inner\">\n\t\t\t\t\t\t<div class=\"row title-social-media-header\">\n\t\t\t\t\t\t\t<div class=\"col-md-12 col-lg-6 mbl-social-icon\">\n\t\t\t\t\t\t\t\t<ul class=\"social-nav\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t\t\t\t\t\t\t<a class=\"subnav-button--form\" href=\"javascript:void(0)\" aria-label=\"contact us\" data-bs-toggle=\"modal\" data-bs-target=\"#WPBdf374f56_21e1_4042_b8a4_955477d6cbc6\" data-bs-expert-title=\"1\">\n\t\t\t\t\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"ico-form\"><\/i>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a aria-label=\"Linkedin\" target=\"_blank\" title=\"Opens in a new window\" href=\"https:\/\/www.linkedin.com\/in\/aliasgarmuchhala\/\"><i aria-hidden=\"true\" class=\"icon-li\"><\/i><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"col-md-12 col-lg-6 box-container\">\n\t\t\t\t\t\t\t\t<div class=\"box-title\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"people-profile-title\">Aliasgar Muchhala<\/h3>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>Global SRE Lead and Global Architects Lead<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"col-md-12 col-lg-6 social-box-container dkt-social-icon\">\n\t\t\t\t\t\t\t\t<ul class=\"social-nav\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t\t\t\t\t\t\t<a class=\"subnav-button--form\" href=\"javascript:void(0)\" aria-label=\"contact us\" data-bs-toggle=\"modal\" data-bs-target=\"#WPBdf374f56_21e1_4042_b8a4_955477d6cbc6\" data-bs-expert-title=\"Aliasgar Muchhala\">\n\t\t\t\t\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"ico-form\"><\/i>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a 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