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.chartlet-seq-box{stroke-width:3}</style><details class="chartlet-focus"><summary>Focus</summary><fieldset><label><input type="radio" name="chartlet-393fca24add6aeed-focus" checked> Show all</label><label><input type="radio" name="chartlet-393fca24add6aeed-focus" class="chartlet-focus-node" id="chartlet-393fca24add6aeed-focus-0"> Customer</label><label><input type="radio" name="chartlet-393fca24add6aeed-focus" class="chartlet-focus-node" id="chartlet-393fca24add6aeed-focus-1"> Web shop</label><label><input type="radio" name="chartlet-393fca24add6aeed-focus" class="chartlet-focus-node" id="chartlet-393fca24add6aeed-focus-2"> Shop API</label><label><input type="radio" name="chartlet-393fca24add6aeed-focus" class="chartlet-focus-node" id="chartlet-393fca24add6aeed-focus-3"> Orders</label><label><input type="radio" name="chartlet-393fca24add6aeed-focus" class="chartlet-focus-node" id="chartlet-393fca24add6aeed-focus-4"> Order events</label><label><input type="radio" name="chartlet-393fca24add6aeed-focus" class="chartlet-focus-node" id="chartlet-393fca24add6aeed-focus-5"> Payment provider</label></fieldset></details><figure class="chartlet-figure" data-viz="chart"><figcaption>A shop on one cloud region</figcaption><div class="chartlet-variant-desktop"><div class="chartlet-stage"><svg xmlns="http://www.w3.org/2000/svg" width="1296" height="300" viewBox="0 0 1296 300" id="chartlet-393fca24add6aeed" role="img" aria-labelledby="chartlet-393fca24add6aeed-title chartlet-393fca24add6aeed-description" class="chartlet-root chartlet-look-editorial"><title id="chartlet-393fca24add6aeed-title">A shop on one cloud region</title><desc id="chartlet-393fca24add6aeed-description">Architecture diagram with 6 components and 5 connections in 1 boundary. Cloud region eu-central-1: Shop API, Orders, Order events. Main path: Customer → Web shop → Shop API → Order events → Payment provider. Most connected: Shop API (3 connections). Nothing leads into Customer. Nothing leads out of Orders and Payment provider. Bottleneck: Shop API; without it the diagram falls apart. Customer (person): connects to Web shop (browses). Web shop (frontend): connects to Shop API (calls, via HTTPS/JSON). Shop API (service): connects to Orders (reads, writes, via SQL/TLS) and Order events (publishes, via AMQP). Orders (database): no outgoing connection. Order events (queue): connects to Payment provider (charges, via HTTPS). 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class="chartlet-flow-edge chartlet-flow-main"><title>Customer → Web shop: browses</title></polyline><polyline points="232,203.5 240,200 232,196.5 232,203.5" class="chartlet-flow-head chartlet-flow-main-head"/></g><g class="chartlet-f chartlet-f-1 chartlet-f-2"><polyline points="344,200 516,200" class="chartlet-flow-edge chartlet-flow-main"><title>Web shop → Shop API: calls [HTTPS/JSON]</title></polyline><polyline points="516,203.5 524,200 516,196.5 516,203.5" class="chartlet-flow-head chartlet-flow-main-head"/></g><g class="chartlet-f chartlet-f-2 chartlet-f-3"><polyline points="628,180 814.014,180 814.014,116 840,116" class="chartlet-flow-edge"><title>Shop API → Orders: reads, writes [SQL/TLS]</title></polyline><polyline points="840,119.5 848,116 840,112.5 840,119.5" class="chartlet-flow-head"/></g><g class="chartlet-f chartlet-f-2 chartlet-f-4"><polyline points="628,200 836,200" class="chartlet-flow-edge chartlet-flow-main"><title>Shop API → Order events: publishes 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Cloud region eu-central-1: Shop API, Orders, Order events. Main path: Customer → Web shop → Shop API → Order events → Payment provider. Most connected: Shop API (3 connections). Nothing leads into Customer. Nothing leads out of Orders and Payment provider. Bottleneck: Shop API; without it the diagram falls apart. Customer (person): connects to Web shop (browses). Web shop (frontend): connects to Shop API (calls, via HTTPS/JSON). Shop API (service): connects to Orders (reads, writes, via SQL/TLS) and Order events (publishes, via AMQP). Orders (database): no outgoing connection. Order events (queue): connects to Payment provider (charges, via HTTPS). 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119.5,592 112.5,592" class="chartlet-flow-head"/></g><g class="chartlet-f chartlet-f-2 chartlet-f-4"><polyline points="228,488 228,604" class="chartlet-flow-edge chartlet-flow-main"><title>Shop API → Order events: publishes [AMQP]</title></polyline><polyline points="224.5,604 228,612 231.5,604 224.5,604" class="chartlet-flow-head chartlet-flow-main-head"/></g><g class="chartlet-f chartlet-f-4 chartlet-f-5"><polyline points="228,652 228,768" class="chartlet-flow-edge chartlet-flow-main"><title>Order events → Payment provider: charges [HTTPS]</title></polyline><polyline points="224.5,768 228,776 231.5,768 224.5,768" class="chartlet-flow-head chartlet-flow-main-head"/></g><g class="chartlet-f chartlet-n-0 chartlet-f-0 chartlet-f-1"></g><g class="chartlet-f chartlet-n-1 chartlet-f-0 chartlet-f-1 chartlet-f-2"></g><g class="chartlet-f chartlet-n-2 chartlet-f-1 chartlet-f-2 chartlet-f-3 chartlet-f-4"></g><g class="chartlet-f chartlet-n-3 chartlet-f-2 chartlet-f-3"></g><g class="chartlet-f chartlet-n-4 chartlet-f-2 chartlet-f-4 chartlet-f-5"></g><g class="chartlet-f chartlet-n-5 chartlet-f-4 chartlet-f-5"></g><g class="chartlet-f chartlet-f-0 chartlet-f-1"><rect x="236" y="129" width="61.12" height="21" class="chartlet-diagram-chip"/><text x="241" y="143" text-anchor="start" class="chartlet-diagram-chip-text">browses</text></g><g class="chartlet-f chartlet-f-1 chartlet-f-2"><rect x="236" y="297" width="117.76" height="21" class="chartlet-diagram-chip"/><text x="241" y="311" text-anchor="start" class="chartlet-diagram-chip-text">calls · </text><text x="282.76" y="311" text-anchor="start" class="chartlet-diagram-tech">HTTPS/JSON</text></g><g class="chartlet-f chartlet-f-2 chartlet-f-3"><rect x="43.08" y="493" width="152.92" height="21" class="chartlet-diagram-chip"/><text x="48.08" y="507" text-anchor="start" class="chartlet-diagram-chip-text">reads, writes · </text><text x="144.8" y="507" text-anchor="start" class="chartlet-diagram-tech">SQL/TLS</text></g><g class="chartlet-f chartlet-f-2 chartlet-f-4"><rect x="236" y="493" width="105.04" height="21" class="chartlet-diagram-chip"/><text x="241" y="507" text-anchor="start" class="chartlet-diagram-chip-text">publishes · </text><text x="309.64" y="507" text-anchor="start" class="chartlet-diagram-tech">AMQP</text></g><g class="chartlet-f chartlet-f-4 chartlet-f-5"><rect x="236" y="679" width="104.44" height="21" class="chartlet-diagram-chip"/><text x="241" y="693" text-anchor="start" class="chartlet-diagram-chip-text">charges · </text><text x="302.44" y="693" text-anchor="start" class="chartlet-diagram-tech">HTTPS</text></g><g class="chartlet-f chartlet-n-0 chartlet-f-0 chartlet-f-1"><rect x="180" y="62.5" width="96" height="64" class="chartlet-diagram-shadow"/><rect x="180" y="60" width="96" height="64" class="chartlet-flow-node chartlet-role-violet"><title>Customer</title></rect><circle cx="228" cy="71" r="6" class="chartlet-arch-head"/><text x="228" y="104.5" text-anchor="middle" class="chartlet-flow-label">Customer</text></g><g class="chartlet-f chartlet-n-1 chartlet-f-0 chartlet-f-1 chartlet-f-2"><rect x="184" y="222.5" width="88" height="72" class="chartlet-diagram-shadow"/><rect x="184" y="220" width="88" height="72" class="chartlet-flow-node chartlet-role-blue"><title>Web shop – browser</title></rect><line x1="184" y1="232" x2="272" y2="232" class="chartlet-flow-inner"/><circle cx="192" cy="226" r="1.8" class="chartlet-arch-dot"/><circle cx="198" cy="226" r="1.8" class="chartlet-arch-dot"/><circle cx="204" cy="226" r="1.8" class="chartlet-arch-dot"/><text x="228" y="259.5" text-anchor="middle" class="chartlet-flow-label">Web shop</text><text x="228" y="273.5" text-anchor="middle" class="chartlet-flow-sublabel">browser</text></g><g class="chartlet-f chartlet-n-2 chartlet-f-1 chartlet-f-2 chartlet-f-3 chartlet-f-4"><rect x="184" y="434.5" width="88" height="56" class="chartlet-diagram-shadow"/><rect x="184" y="432" width="88" height="56" class="chartlet-flow-node chartlet-role-blue"><title>Shop API – Node.js</title></rect><text x="228" y="457.5" text-anchor="middle" class="chartlet-flow-label">Shop API</text><text x="228" y="471.5" text-anchor="middle" class="chartlet-flow-sublabel">Node.js</text></g><g class="chartlet-f chartlet-n-3 chartlet-f-2 chartlet-f-3"><polyline points="76,607.5 76,661.5 77.363,662.794 81.359,664 87.716,665.036 96,665.83 105.647,666.33 116,666.5 126.353,666.33 136,665.83 144.284,665.036 150.641,664 154.637,662.794 156,661.5 156,607.5 154.637,606.206 150.641,605 144.284,603.964 136,603.17 126.353,602.67 116,602.5 105.647,602.67 96,603.17 87.716,603.964 81.359,605 77.363,606.206 76,607.5 76,607.5" class="chartlet-diagram-shadow"/><polyline points="76,605 76,659 77.363,660.294 81.359,661.5 87.716,662.536 96,663.33 105.647,663.83 116,664 126.353,663.83 136,663.33 144.284,662.536 150.641,661.5 154.637,660.294 156,659 156,605 154.637,603.706 150.641,602.5 144.284,601.464 136,600.67 126.353,600.17 116,600 105.647,600.17 96,600.67 87.716,601.464 81.359,602.5 77.363,603.706 76,605 76,605" class="chartlet-flow-node chartlet-role-teal"><title>Orders – Postgres</title></polyline><polyline points="76,605 77.363,606.294 81.359,607.5 87.716,608.536 96,609.33 105.647,609.83 116,610 126.353,609.83 136,609.33 144.284,608.536 150.641,607.5 154.637,606.294 156,605" class="chartlet-diagram-rim"/><text x="116" y="632.5" text-anchor="middle" class="chartlet-flow-label">Orders</text><text x="116" y="646.5" text-anchor="middle" class="chartlet-flow-sublabel">Postgres</text></g><g class="chartlet-f chartlet-n-4 chartlet-f-2 chartlet-f-4 chartlet-f-5"><rect x="176" y="610.5" width="112" height="40" class="chartlet-diagram-shadow"/><rect x="176" y="608" width="112" height="40" class="chartlet-flow-node chartlet-role-violet"/><rect x="172" y="614.5" width="112" height="40" class="chartlet-diagram-shadow"/><rect x="172" y="612" width="112" height="40" class="chartlet-flow-node chartlet-role-violet"><title>Order events</title></rect><text x="228" y="636.5" text-anchor="middle" class="chartlet-flow-label">Order events</text></g><g class="chartlet-f chartlet-n-5 chartlet-f-4 chartlet-f-5"><rect x="184" y="778.5" width="88" height="56" class="chartlet-diagram-shadow"/><rect x="184" y="776" width="88" height="56" class="chartlet-flow-node chartlet-flow-external chartlet-role-gray"><title>Payment provider</title></rect><text x="228" y="800.5" text-anchor="middle" class="chartlet-flow-label">Payment</text><text x="228" y="816.5" text-anchor="middle" class="chartlet-flow-label">provider</text></g></svg><label class="chartlet-hotspot" id="chartlet-393fca24add6aeed-m-hs-0" for="chartlet-393fca24add6aeed-focus-0"></label><label class="chartlet-hotspot" id="chartlet-393fca24add6aeed-m-hs-1" for="chartlet-393fca24add6aeed-focus-1"></label><label class="chartlet-hotspot" id="chartlet-393fca24add6aeed-m-hs-2" for="chartlet-393fca24add6aeed-focus-2"></label><label class="chartlet-hotspot" id="chartlet-393fca24add6aeed-m-hs-3" for="chartlet-393fca24add6aeed-focus-3"></label><label class="chartlet-hotspot" id="chartlet-393fca24add6aeed-m-hs-4" for="chartlet-393fca24add6aeed-focus-4"></label><label class="chartlet-hotspot" id="chartlet-393fca24add6aeed-m-hs-5" for="chartlet-393fca24add6aeed-focus-5"></label></div></div><p class="chartlet-source">Source: Illustrative reference architecture</p><details class="chartlet-data" data-viz-text><summary>Show chart data</summary><table><caption>Data for A shop on one cloud region</caption><thead><tr><th scope="col">Component</th><th scope="col">Kind</th><th scope="col">Boundary</th><th scope="col">Connects to</th></tr></thead><tbody><tr><th scope="row">Customer</th><td>person</td><td></td><td>Web shop (browses)</td></tr><tr><th scope="row">Web shop</th><td>frontend</td><td></td><td>Shop API (calls, via HTTPS/JSON)</td></tr><tr><th scope="row">Shop API</th><td>service</td><td>Cloud region eu-central-1</td><td>Orders (reads, writes, via SQL/TLS), Order events (publishes, via AMQP)</td></tr><tr><th scope="row">Orders</th><td>database</td><td>Cloud region eu-central-1</td><td></td></tr><tr><th scope="row">Order events</th><td>queue</td><td>Cloud region eu-central-1</td><td>Payment provider (charges, via HTTPS)</td></tr><tr><th scope="row">Payment provider</th><td>external system</td><td></td><td></td></tr></tbody></table></details></figure></div>