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Every system is a node with the building blocks it needs, at any depth.
Economic impact per yearT1≥ $50BT2$5–50BT3$0.5–5BT4< $0.5B
840systems, growing every day
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Layer 1 — Foundations
Hardware and datacenter
21T1gpuT1datacenter-facilityT1dram-hbmT1cpu-coreT1ssd-controllerT1switch-asicT2ai-acceleratorT2training-fabricT2storage-arrayT2chip-design-flowT2gigawatt-ai-campusT3hddT3optical-transceiverT3rtl-verificationT3ate-testT3wafer-inspection-yieldT3computational-lithographyT3dc-power-upsT3rack-scale-systemT3scale-up-fabricT4physical-verification
Operating systems and runtimes
20Compilers and language tooling
13Embedded and IoT
23T1automotive-ecuT1avionicsT2wearable-firmwareT2camera-ispT2motor-driveT2plc-scadaT2medical-device-firmwareT2industrial-iot-platformT2smart-homeT2battery-managementT2secure-elementT2fly-by-wire-flight-controlT2iot-fleetT2edge-ai-cameraT2rtlsT3lpwanT3rtosT3printer-firmwareT3print-pipelineT3satellite-flight-softwareT3software-defined-vehicle-osT3tcasT4rfid-inventory
Layer 2 — Infrastructure
Databases and storage engines
32T1relational-dbT2disaggregated-oltpT2object-storageT2columnar-warehouseT2block-storageT2distributed-kvT2distributed-fsT2lakehouseT2document-dbT2kv-cacheT2search-engineT3geo-dbT3cold-archiveT3distributed-sqlT3wide-columnT3query-engineT3graph-dbT3vector-dbT3geocoderT3htap-dbT3timeseries-dbT3embedded-sqlT3lsm-engineT3btree-engineT3ledger-dbT3tiered-cacheT3dataframe-engineT3db-shardingT4db-proxyT4event-storeT4position-dbT4online-schema-migration
Data processing and pipelines
24T2master-data-managementT2batch-engineT2ingestionT2commit-logT3workflow-engineT3customer-data-platformT3task-queueT3stream-processorT3data-catalogT3data-qualityT3cdcT3log-shippingT3realtime-olapT3data-clean-roomT3notebooksT3identity-graphT3sql-transformT3feature-storeT3web-crawlerT3event-routerT4reverse-etlT4data-versioningT4schema-registryT4web-archive
Networking and edge
32T2cdnT2anycast-edgeT2stateful-firewallT2sdnT2satellite-networkT2ddos-wafT2wifi-meshT2enterprise-wlanT2sse-gatewayT2l7-proxyT2api-gatewayT2sd-wanT2dns-resolverT2http-serverT2bgp-routerT3l4-load-balancerT3overlay-vpnT3edge-computeT3realtime-pubsubT3forward-proxyT3flow-monitoringT3dns-authoritativeT3network-osT3service-meshT3mqtt-brokerT3packet-processorT3nat-gatewayT3rpc-frameworkT3p2p-networkT4graphql-gatewayT4network-simulatorT4global-rate-limiter
Cloud platform and compute
25T1hypervisorT2multi-tenant-saasT2gpu-cloudT2serverlessT2paasT2container-orchestratorT2remote-desktopT2private-cloudT2usage-meteringT2cloud-control-planeT3bare-metal-provisioningT3baasT3iacT3cloud-costT3autoscalerT3spot-fleetT3container-runtimeT3cluster-schedulerT3coordination-storeT3cloud-governanceT4wasm-runtimeT4config-distributionT4vm-live-migrationT4distributed-cronT4unikernel
Observability and operations
21Security and identity
41T2ot-securityT2identity-providerT2full-disk-encryptionT2fraud-detectionT2edrT2ngfwT2digital-forensicsT2zero-trustT2kycT2antivirusT2igaT2siemT2auth-serviceT2cnappT2threat-intel-platformT2enterprise-vpnT3physical-access-controlT3background-screeningT3pkiT3vuln-scannerT3secrets-kmsT3remote-attestationT3confidential-computeT3dlpT3password-managerT3bot-detectionT3hsm-serviceT3anti-cheatT3email-authT3audit-logT3cert-transparencyT3directory-serviceT3url-reputationT4e2e-cloud-backupT4authorization-serviceT4secure-updatesT4fair-playT4differential-privacyT4content-provenanceT4key-transparencyT4anonymity-network
CI/CD and developer tooling
33T2code-editorT2sastT2code-hostingT3ci-serverT3continuous-deliveryT3supply-chain-securityT3language-serverT3browser-test-gridT3version-controlT3ci-runner-fleetT3code-reviewT3load-testingT3cloud-dev-envT3build-systemT3artifact-registryT3container-buildT3monorepo-vcsT3package-managerT4gitopsT4mobile-ciT4remote-build-executionT4code-searchT4preview-environmentsT4developer-portalT4dependency-updatesT4migration-ciT4merge-queueT4test-selectionT4flaky-test-detectionT4canary-analysisT4continuous-fuzzingT4release-managementT4continuous-benchmarking
Layer 3 — Platforms
Communication and media
32T1video-vodT2video-surveillanceT2music-streamingT2sms-gatewayT2live-streamingT2voipT2emailT2video-callT2chatT2audience-measurementT2video-encoderT2spam-filterT2tv-ad-salesT3raster-image-editorT3pay-tv-platformT3video-editorT3transcoding-farmT3drmT33d-content-creationT3image-servingT3push-notificationsT3group-voiceT3auto-captionsT3dawT3realtime-audio-dspT3podcast-hostingT3e2e-messagingT3audio-codecT3image-codecT3mail-storeT3music-royalty-collectionT3ucaas
Payments and commerce
32T1two-sided-marketplaceT1rtb-exchangeT2in-app-purchasesT2payment-gatewayT2point-of-saleT2online-auctionT2bookingT2billingT2loyaltyT2e-commerceT2card-paymentsT2card-networkT2card-issuingT2digital-walletT2achT2mobile-moneyT2p2p-paymentsT3product-searchT3warehouse-managementT3publisher-ad-serverT3event-ticketingT3retail-merchandisingT3b2b-ediT3dynamic-pricingT3crowdfundingT3mobile-attributionT3affiliate-trackingT3card-vaultT3promotions-engineT3marketplace-payoutsT3cloud-marketplaceT4virtual-waiting-room
AI and ML infrastructure
23T1llm-pretrainingT1llm-inferenceT2rl-post-trainingT2ml-platformT2llm-api-platformT2data-labelingT3model-servingT3pretraining-dataT3tensor-runtimeT3embedding-serviceT3on-device-inferenceT3gpu-job-schedulerT3eval-harnessT3synthetic-dataT3model-monitoringT3llm-gatewayT3elastic-trainingT3model-compressionT3ml-compilerT4hyperparameter-searchT4federated-learningT4self-play-trainingT4nnue-training
Agentic AI
18T2agent-runtimeT2coding-agentT3voice-agentT3support-agentT3llm-workflow-automationT3deep-researchT3computer-use-agentT3mcp-serverT3mcp-hostT3multi-agent-orchestratorT3structured-extractionT3agent-memoryT3agent-observabilityT3text-to-sql-agentT3background-agentsT4agent-evalsT4tool-marketplaceT4codebase-indexing
AI and agent security
14Frontend and UI
10Numerical and mathematical computing
19T3linear-solver-suiteT3statistics-environmentT3mesh-generatorT3computer-algebraT3lp-mip-solverT3proof-assistantT3eigensolverT3ode-dae-solverT3nonlinear-solverT3nonlinear-optimizerT3convex-optimizerT3constraint-solverT3autodiff-frameworkT3fft-libraryT3array-computingT4sat-smt-solverT4surrogate-modelingT4uncertainty-quantificationT4probabilistic-programming
Layer 4 — Applications
Productivity and collaboration
24T2collab-editingT2spreadsheet-engineT2team-chatT2document-managementT2project-managementT2issue-trackerT3word-processorT3e-signatureT3multiplayer-designT3notes-wikiT3forms-surveysT3pdf-renderingT3calendarT3webinarT3whiteboardT3time-trackingT3cloud-video-editorT3no-code-databaseT3workplace-searchT3scheduling-linksT3office-suiteT4video-messagingT4mail-syncT4local-first-sync
Sales, marketing and customer service
22T1crmT2contact-centerT2marketing-automationT2helpdeskT2media-intelligenceT2sales-intelligenceT3experience-managementT3sales-engagementT3cpqT3social-media-managementT3direct-mailT3newsletterT3live-chatT3marketing-measurementT3seo-platformT3trade-promotion-managementT3customer-feedbackT3customer-successT3knowledge-baseT3shared-inboxT3influencer-marketingT4url-shortener
Finance, HR and back office
15IT operations, analytics and integration
9Web, content and learning
7Industry and field operations
9Consumer applications
29T1social-feedT1short-videoT1food-deliveryT1ride-hailingT1hotel-bookingT2maps-routingT2file-syncT2professional-networkT2moderationT2datingT2photo-backupT2real-estate-listingsT2news-rankingT2app-storeT2super-appT3forum-qaT3reviewsT3fitness-trackingT3live-trafficT3spaced-repetitionT3offline-findingT3personal-financeT3live-commerceT3online-judgeT3encyclopediaT3flight-searchT3search-autocompleteT3ebook-platformT4chess-platform
AI applications
25T1ads-auctionT1web-searchT1chat-assistantT2autonomous-drivingT2ragT2speech-recognitionT2vision-pipelineT2recommenderT2face-recognitionT2voice-assistantT2code-completionT2demand-side-platformT3conversational-agent-platformT3text-to-speechT3image-generationT3document-ocrT3abuse-classifierT3demand-forecastingT3ai-tutorT3machine-translationT3knowledge-graphT3video-generationT3realtime-personalizationT3visual-searchT4metric-anomaly-detection
Finance and trading
46T1hftT2retail-brokerageT2sportsbookT2financial-data-terminalT2crypto-exchangeT2fx-conversionT2credit-scoringT2insurance-policy-adminT2core-bankingT2insurance-claimsT2risk-engineT2casino-gaming-systemT2lending-platformT2portfolio-managementT2omsT2aml-monitoringT2loan-originationT2exchangeT2market-dataT2clearingT2realtime-paymentsT2rtgsT2securitizationT3securities-settlementT3credit-bureauT3alternative-dataT3index-calculationT3retirement-recordkeepingT3regulatory-reportingT3trading-risk-platformT3title-escrowT3robo-advisorT3treasuryT3tax-engineT3smart-order-routerT3open-bankingT3reconciliationT3sanctions-screeningT3collateral-managementT3prediction-marketT3interbank-messagingT3derivatives-pricingT3fund-adminT3securities-custodyT3lottery-systemT4backtester
Healthcare
17Biotech and life sciences
14Chemistry and materials
3Engineering design and CAx
6Transport, logistics and mobility
28T1last-mile-deliveryT2ev-chargingT2transportation-managementT2rail-signallingT2fleet-telematicsT2electronic-tollingT2airport-operationsT2air-traffic-controlT2aircraft-mroT2traffic-signal-controlT2integrated-bridge-systemT2supply-chain-planningT2freight-rail-operationsT3rail-traffic-managementT3security-screeningT3sortation-systemT3dynamic-positioningT3airline-revenue-managementT3vehicle-routingT3micromobilityT3car-rentalT3airline-reservationT3container-terminalT3autonomous-truckingT3shipping-platformT3freight-brokerageT4transit-plannerT4drone-delivery
Energy, industry and public infrastructure
32T2smart-meteringT2building-automationT2mesT2gis-platformT2precision-agricultureT2tax-filingT2pipeline-managementT2afisT2predictive-maintenanceT2machine-vision-inspectionT2grid-emsT2social-benefitsT3substation-automationT3elevator-controlT3emergency-dispatchT3land-registryT3virtual-power-plantT3energy-retail-billingT3customs-single-windowT3ctrmT3energy-tradingT3utility-cisT3hvdc-controlT3water-scadaT3fab-mesT3e-idT3ground-stationT3reactor-protectionT3safety-instrumented-systemT3solar-inverterT4fire-alarmT4e-voting
Defense and aerospace
8Telecom
14Games
22T2ugc-game-platformT2game-serverT3vr-runtimeT3game-backendT3game-engineT3cloud-gamingT3mmo-shardingT3party-lobbyT3battle-royaleT3patch-deliveryT3virtual-economyT3physics-engineT4game-audio-engineT4leaderboardsT4replay-systemT4procedural-generationT4voxel-engineT4world-streamingT4chess-engineT4poker-solverT4go-engineneural-chess-engine
Simulation and scientific computing
42T2mpi-clusterT2cfd-fem-solverT2weather-modelT2digital-twinT2flight-training-simulatorT3earth-observationT3structural-femT3seismic-imagingT3climate-modelT3circuit-simT3data-assimilationT3quantum-stackT3electromagnetics-simT3reservoir-simT3robotics-simT3path-tracerT3crash-simT3radiation-transportT3power-flow-simT3multiphysicsT3lbm-solverT3flood-forecastingT3reactor-core-simT4physics-daqT4ml-weather-modelT4traffic-simT4astronomy-pipelineT4nowcastingT4plasma-fusion-simT4realtime-cloth-fluidT4qec-decoderT4les-dns-solverT4ocean-modelT4air-quality-modelT4n-bodyT4epidemic-modelT4sph-solverT4wildfire-spreadT4storm-surgeT4earthquake-simT4groundwater-modelT4lattice-qcd