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Build a Hello World Frontend</a></li></ul></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-2 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist" tabindex="0" href="/docs/build/smart-contracts/example-contracts">Example Contracts</a><button aria-label="Expand sidebar category 'Example Contracts'" aria-expanded="false" type="button" class="clean-btn menu__caret"></button></div></li></ul></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist" href="/docs/build/apps">Build Applications</a><button aria-label="Expand sidebar category 'Build Applications'" aria-expanded="false" type="button" class="clean-btn menu__caret"></button></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist" href="/docs/build/guides">How-To Guides</a><button aria-label="Expand sidebar category 'How-To Guides'" aria-expanded="false" type="button" class="clean-btn menu__caret"></button></div></li></ul></nav></div></div></aside><main class="docMainContainer_TBSr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col"><div class="docItemContainer_jfFK"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Introduction</span><meta itemprop="position" content="1"></li></ul></nav><div class="theme-doc-markdown markdown"><div class="row"><div class="col col--12 markdown"><header><h1>Introduction</h1></header> <p>The Build section is split into three parts: 1) writing smart contracts, 2) building applications, and 3) how-to guides.</p> <p>Find explanations on what each section contains below.</p> <h2 class="anchor anchorWithStickyNavbar_LWe7" id="smart-contracts">Smart contracts<a href="#smart-contracts" class="hash-link" aria-label="Direct link to Smart contracts" title="Direct link to Smart contracts"></a></h2> <p>Smart contracts are self-executing programs with the terms of an agreement written directly into the code. They automatically enforce and execute the terms of the contract when predefined conditions are met. Developers must define the rules and logic of the contract while also ensuring security. Once written and tested, smart contracts are deployed to the blockchain, where they become immutable and publicly accessible.</p> <p>This section will walk you through how to get set up to write smart contracts on Stellar, plus an introduction to testing, storing data, and deploying your contracts. It also provides an array of example contracts for use.</p> <h2 class="anchor anchorWithStickyNavbar_LWe7" id="applications">Applications<a href="#applications" class="hash-link" aria-label="Direct link to Applications" title="Direct link to Applications"></a></h2> <p>Applications interact with the blockchain and can use smart contracts as the backend. They provide user interfaces, manage user interactions, and can integrate with smart contracts to operate. Users can interact with the blockchain using the application interface. Writing smart contracts focuses on the backend logic and rules enforced on the blockchain while building applications involves creating the front end and integrating it with these smart contracts to provide a complete user experience.</p> <div class="theme-admonition theme-admonition-note admonition_xJq3 alert alert--secondary"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"></path></svg></span>note</div><div class="admonitionContent_BuS1"><p>You can create applications on Stellar without using smart contracts, as demonstrated in the <a href="/docs/build/apps/wallet/overview">Wallet SDK tutorial</a> or the <a href="/docs/build/apps/example-application-tutorial/overview">JS SDK Payment Application tutorial</a>.</p></div></div> <p>This section walks you through design considerations for applications and tutorials for building applications with or without smart contracts.</p> <h2 class="anchor anchorWithStickyNavbar_LWe7" id="how-to-guides">How-To Guides<a href="#how-to-guides" class="hash-link" aria-label="Direct link to How-To Guides" title="Direct link to How-To Guides"></a></h2> <p>This section provides step-by-step instructions to help users complete specific tasks associated with developing on Stellar. These tasks can include instructions for aspects of writing contracts, interacting with contracts, building applications, using Stellar operations, setting up infrastructure, and more.</p> <p>How-to guides assume that the user has some experience and knowledge with building on Stellar and are not typically for beginners.</p></div></div></div><div class="row"><div class="col col--12"><footer class="theme-doc-footer docusaurus-mt-lg"><div class="row margin-top--sm theme-doc-footer-edit-meta-row"><div class="col"><a href="https://github.com/stellar/stellar-docs/edit/main/docs/build/README.mdx" target="_blank" rel="noopener noreferrer" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col 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