What we build on, and why it is probably not the right question.
Every stack here is chosen per engagement against the estate you already run, not from a house preference. If your team will maintain it, that outweighs what we would pick unprompted.
Five layers, and the choice is different at each.
Foundation and data choices are expensive to reverse and are made once, against what your team already runs. Experience and intelligence choices are cheap to revisit and are made per product. Most arguments about stack are really disagreements about which layer the decision sits in.
8 in use
Languages & frameworks
Next.js / React
Used in Web PlatformsDigital ExperiencesPython ML stack
Used in ML & Predictive IntelligenceAI & Intelligent SystemsReact Native / Flutter
Used in Mobile ApplicationsDigital ExperiencesReact/Next.js
Used in Custom Software EngineeringEnterprise Platform EngineeringTypeScript
Used in Web PlatformsDigital ExperiencesTypeScript & Node.js
Used in Custom Software EngineeringEnterprise Platform EngineeringVPC & zero-trust networking
Used in Cloud Architecture & MigrationData & CloudZero-trust patterns
Used in Security & ComplianceData & Cloud
14 in use
Data & AI
Airflow/Dagster
Used in Data Engineering & AnalyticsData & Clouddbt
Used in Data Engineering & AnalyticsData & CloudEmbedding pipelines
Used in Custom AI & LLM DevelopmentAI & Intelligent SystemsKafka / event streams
Used in Systems Integration & APIsEnterprise Platform EngineeringLLM feasibility spikes
Used in AI Strategy & RoadmapAI & Intelligent SystemsMulti-tenant Postgres patterns
Used in SaaS EngineeringEnterprise Platform EngineeringOpen-source LLMs
Used in Custom AI & LLM DevelopmentAI & Intelligent SystemsPostgres
Used in Web PlatformsDigital ExperiencesPostgreSQL
Used across 2 servicesEnterprise Platform EngineeringPostgreSQL / ClickHouse / BigQuery
Used in Data Engineering & AnalyticsData & CloudPyTorch vision models
Used in Computer Vision & SpeechAI & Intelligent SystemsStreaming (Kafka)
Used in Data Engineering & AnalyticsData & CloudVector databases
Used in Custom AI & LLM DevelopmentAI & Intelligent SystemsvLLM & inference servers
Used in MLOps & AI InfrastructureAI & Intelligent Systems
6 in use
Cloud & platform
AWS / Azure / GCP
Used in Cloud Architecture & MigrationData & CloudKubernetes
Used in Cloud Architecture & MigrationData & CloudKubernetes & GPU orchestration
Used in MLOps & AI InfrastructureAI & Intelligent SystemsPM2/Kubernetes
Used in DevOps & ReliabilityData & CloudTerraform
Used in Cloud Architecture & MigrationData & CloudTerraform & Ansible
Used in DevOps & ReliabilityData & Cloud
9 in use
Delivery & quality
Allure
Used in Dedicated QA & Test AutomationDedicated TeamsCypress
Used in Dedicated QA & Test AutomationDedicated TeamsGitHub Actions
Used in Dedicated QA & Test AutomationDedicated TeamsGitHub Actions / GitLab CI
Used in DevOps & ReliabilityData & CloudJest
Used in Dedicated QA & Test AutomationDedicated TeamsJMeter
Used in Dedicated QA & Test AutomationDedicated Teamsk6
Used in Dedicated QA & Test AutomationDedicated TeamsPlaywright
Used in Dedicated QA & Test AutomationDedicated TeamsPyTest
Used in Dedicated QA & Test AutomationDedicated Teams
108 in use
Practices & tooling
Adoption playbooks
Used in Digital Transformation ConsultingTechnology AdvisoryAgent orchestration (LangGraph)
Used in AI Agents & Autonomous WorkflowsAI & Intelligent SystemsAnalytics dashboards
Used in Custom CRM SolutionsEnterprise Platform EngineeringAnalytics instrumentation
Used in Enterprise Product DevelopmentEnterprise Platform EngineeringAPI façades
Used in Legacy ModernizationEnterprise Platform EngineeringAPI gateways
Used in Systems Integration & APIsEnterprise Platform EngineeringArchitecture governance
Used in CTO-as-a-ServiceTechnology AdvisoryArchitecture review
Used in Technology Due DiligenceTechnology AdvisoryAutomated patching
Used in Managed Cloud SupportData & CloudBackend
Used in Team AugmentationDedicated TeamsBackup verification
Used in Managed Cloud SupportData & CloudBarcode/IoT capture
Used in Custom ERP SolutionsEnterprise Platform EngineeringCDC & data pipelines
Used in Legacy ModernizationEnterprise Platform EngineeringClaude & GPT APIs
Used in Custom AI & LLM DevelopmentAI & Intelligent SystemsClaude & GPT models
Used in AI Agents & Autonomous WorkflowsAI & Intelligent SystemsClient identity provider
Used in Offshore Delivery CentreDedicated TeamsCloud-native infrastructure
Used in Enterprise Product DevelopmentEnterprise Platform EngineeringCost analytics
Used in MLOps & AI InfrastructureAI & Intelligent SystemsCost modelling
Used in Technology Due DiligenceTechnology AdvisoryCrash analytics
Used in Mobile ApplicationsDigital ExperiencesData audits
Used in AI Strategy & RoadmapAI & Intelligent SystemsData engineering
Used in Team AugmentationDedicated TeamsDedicated infrastructure
Used in Offshore Delivery CentreDedicated TeamsDelivery audits
Used in CTO-as-a-ServiceTechnology AdvisoryDesign tokens
Used in UX/UI & Product DesignDigital ExperiencesDevOps and SRE
Used in Team AugmentationDedicated TeamsE-invoice & e-way APIs
Used in Custom ERP SolutionsEnterprise Platform EngineeringEdge CDN
Used in Web PlatformsDigital ExperiencesEdge inference (Jetson/ONNX)
Used in Computer Vision & SpeechAI & Intelligent SystemsEnterprise API integration
Used in AI Agents & Autonomous WorkflowsAI & Intelligent SystemsEnterprise SSO
Used in Custom Software EngineeringEnterprise Platform EngineeringEntity and payroll setup
Used in Build-Operate-TransferDedicated TeamsEstimation models
Used in Product Discovery & RequirementsTechnology AdvisoryEvaluation frameworks
Used in Custom AI & LLM DevelopmentAI & Intelligent SystemsEvent storming
Used in Product Discovery & RequirementsTechnology AdvisoryEvent-driven architecture
Used in Custom Software EngineeringEnterprise Platform EngineeringExplainability tooling
Used in ML & Predictive IntelligenceAI & Intelligent SystemsFeature flagging
Used in SaaS EngineeringEnterprise Platform EngineeringFeature stores
Used in ML & Predictive IntelligenceAI & Intelligent SystemsFigma
Used in UX/UI & Product DesignDigital ExperiencesFinOps tooling
Used in Cloud Architecture & MigrationData & CloudFrontend
Used in Team AugmentationDedicated TeamsGeo services
Used in Custom CRM SolutionsEnterprise Platform EngineeringGovernance templates
Used in AI Strategy & RoadmapAI & Intelligent SystemsGrafana/Prometheus
Used in Managed Cloud SupportData & CloudHeadless commerce
Used in Web PlatformsDigital ExperiencesHiring frameworks
Used in CTO-as-a-ServiceTechnology AdvisoryIndian-language models
Used in Computer Vision & SpeechAI & Intelligent SystemsiPaaS where it fits
Used in Systems Integration & APIsEnterprise Platform EngineeringISO 27001 controls
Used in Offshore Delivery CentreDedicated TeamsKnowledge transfer
Used in Build-Operate-TransferDedicated TeamsLangGraph
Used in Custom AI & LLM DevelopmentAI & Intelligent SystemsMaturity frameworks
Used in Digital Transformation ConsultingTechnology AdvisoryMDM integration
Used in Mobile ApplicationsDigital ExperiencesMetabase/Superset/Power BI
Used in Data Engineering & AnalyticsData & CloudMobile
Used in Team AugmentationDedicated TeamsMobile & web product stacks
Used in Enterprise Product DevelopmentEnterprise Platform EngineeringModular monolith / services
Used in Custom ERP SolutionsEnterprise Platform EngineeringObservability (OpenTelemetry)
Used in MLOps & AI InfrastructureAI & Intelligent SystemsObservability stacks
Used in AI Agents & Autonomous WorkflowsAI & Intelligent SystemsOffline sync engines
Used in Mobile ApplicationsDigital ExperiencesOpenAPI
Used in Systems Integration & APIsEnterprise Platform EngineeringOpenTelemetry
Used in DevOps & ReliabilityData & CloudOpportunity scoring frameworks
Used in AI Strategy & RoadmapAI & Intelligent SystemsOur review standard
Used in Dedicated Development PodsDedicated TeamsPagerDuty-class alerting
Used in Managed Cloud SupportData & CloudParallel-run harnesses
Used in Legacy ModernizationEnterprise Platform EngineeringProcess mapping
Used in Product Discovery & RequirementsTechnology AdvisoryProcess mining-lite
Used in Digital Transformation ConsultingTechnology AdvisoryPrometheus/Grafana
Used in DevOps & ReliabilityData & CloudPrompt registries
Used in MLOps & AI InfrastructureAI & Intelligent SystemsPrototype spikes
Used in Product Discovery & RequirementsTechnology AdvisoryPush & geo services
Used in Mobile ApplicationsDigital ExperiencesQA automation
Used in Team AugmentationDedicated TeamsRecruitment
Used in Build-Operate-TransferDedicated TeamsReporting engines
Used in Custom ERP SolutionsEnterprise Platform EngineeringRetention planning
Used in Build-Operate-TransferDedicated TeamsRoadmap tooling
Used in CTO-as-a-ServiceTechnology AdvisoryRTSP pipelines
Used in Computer Vision & SpeechAI & Intelligent SystemsRunbooks
Used in Managed Cloud SupportData & CloudSAST/DAST tooling
Used in Security & ComplianceData & CloudSecure API platforms
Used in Enterprise Product DevelopmentEnterprise Platform EngineeringSecurity scanning
Used in Technology Due DiligenceTechnology AdvisorySegregated environments
Used in Offshore Delivery CentreDedicated TeamsSIEM-lite stacks
Used in Security & ComplianceData & CloudSOC2-aligned practices
Used in SaaS EngineeringEnterprise Platform EngineeringStatic analysis
Used in Technology Due DiligenceTechnology AdvisoryStatutory compliance
Used in Build-Operate-TransferDedicated TeamsStorybook
Used in UX/UI & Product DesignDigital ExperiencesStrangler-fig architecture
Used in Legacy ModernizationEnterprise Platform EngineeringStreaming inference
Used in ML & Predictive IntelligenceAI & Intelligent SystemsStripe/Razorpay billing
Used in SaaS EngineeringEnterprise Platform EngineeringTCO modelling
Used in Digital Transformation ConsultingTechnology AdvisoryTelephony & WhatsApp APIs
Used in Custom CRM SolutionsEnterprise Platform EngineeringThreat modelling
Used in Security & ComplianceData & CloudUsability testing
Used in UX/UI & Product DesignDigital ExperiencesUsage metering
Used in SaaS EngineeringEnterprise Platform EngineeringVault-class secrets
Used in Security & ComplianceData & CloudWCAG 2.2
Used in UX/UI & Product DesignDigital ExperiencesWeb & mobile CRM stacks
Used in Custom CRM SolutionsEnterprise Platform EngineeringWebhook infrastructures
Used in Systems Integration & APIsEnterprise Platform EngineeringWhisper-class ASR
Used in Computer Vision & SpeechAI & Intelligent SystemsWorkflow engines
Used in AI Agents & Autonomous WorkflowsAI & Intelligent SystemsXGBoost & deep learning
Used in ML & Predictive IntelligenceAI & Intelligent SystemsYour CI
Used in Dedicated Development PodsDedicated TeamsYour repositories
Used in Dedicated Development PodsDedicated TeamsYour stack
Used in Dedicated Development PodsDedicated TeamsYour ticketing
Used in Dedicated Development PodsDedicated Teams
There is no page per technology here, deliberately — a heading and a paragraph of filler per stack is a thin page. To talk about the one you actually run, discuss your stack.

