Cloud infrastructure APIs manage compute, storage, networking, and serverless functions across providers like AWS, GCP, and Azure. Most require API keys or OAuth with fine-grained permissions. Free tiers are rare — these are production tools with usage-based pricing. Health status and response time matter more here than in most categories, since downtime in a cloud API often means downtime in your product.
| API | Pricing | Auth | CORS | Health | |
|---|---|---|---|---|---|
| AWS APIGateway API Official AWS APIGateway service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ApiGatewayManagementApi API Official AWS ApiGatewayManagementApi service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ApiGatewayV2 API Official AWS ApiGatewayV2 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS AppMesh API Official AWS AppMesh service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS AppStream API Official AWS AppStream service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS AppSync API Official AWS AppSync service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ApplicationAutoScaling API Official AWS ApplicationAutoScaling service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ApplicationInsights API Official AWS ApplicationInsights service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Cloud9 API Official AWS Cloud9 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudDirectory API Official AWS CloudDirectory service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudFormation API Official AWS CloudFormation service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudFront API Official AWS CloudFront service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudHSM API Official AWS CloudHSM service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudHSMV2 API Official AWS CloudHSMV2 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudSearch API Official AWS CloudSearch service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CodeBuild API Official AWS CodeBuild service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CodeCommit API Official AWS CodeCommit service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CodeDeploy API Official AWS CodeDeploy service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CodePipeline API Official AWS CodePipeline service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS DataPipeline API Official AWS DataPipeline service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS EventBridge API Official AWS EventBridge service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS IoTEvents API Official AWS IoTEvents service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS IoTEventsData API Official AWS IoTEventsData service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Lambda API Official AWS Lambda service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ResourceGroups API Official AWS ResourceGroups service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ResourceGroupsTaggingAPI API Official AWS ResourceGroupsTaggingAPI service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Route53 API Official AWS Route53 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Route53Resolver API Official AWS Route53Resolver service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ServerlessApplicationRepository API Official AWS ServerlessApplicationRepository service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS StepFunctions API Official AWS StepFunctions service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| Azure Aadiam Azure Active Directory API Official Microsoft Azure REST API OpenAPI specification for specification/azureactivedirectory/resource-manager/Microsoft.Aadiam/AzureActiveDirectory/stable/2020-03-01/privateLinkForAzureAD.json. | Paid | API Key | Yes | Profile | |
| Azure Advisor API Official Microsoft Azure REST API OpenAPI specification for specification/advisor/resource-manager/Microsoft.Advisor/Advisor/stable/2025-01-01/advisor.json. | Paid | API Key | Yes | Profile | |
| Azure Api Center API Official Microsoft Azure REST API OpenAPI specification for specification/apicenter/resource-manager/Microsoft.ApiCenter/ApiCenter/stable/2024-03-01/apicenter.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management API Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2024-05-01/apimloggers.json. | Paid | API Key | Yes | Profile | |
| Azure App Compliance Automation API Official Microsoft Azure REST API OpenAPI specification for specification/appcomplianceautomation/resource-manager/Microsoft.AppComplianceAutomation/stable/2024-06-27/appcomplianceautomation.json. | Paid | API Key | Yes | Profile | |
| Azure App Configuration API Official Microsoft Azure REST API OpenAPI specification for specification/appconfiguration/resource-manager/Microsoft.AppConfiguration/AppConfiguration/stable/2024-06-01/appconfiguration.json. | Paid | Unknown | Yes | Profile | |
| Azure App Container Apps API Official Microsoft Azure REST API OpenAPI specification for specification/app/resource-manager/Microsoft.App/ContainerApps/stable/2026-01-01/openapi.json. | Paid | API Key | Yes | Profile | |
| Azure App Platform API Official Microsoft Azure REST API OpenAPI specification for specification/appplatform/resource-manager/Microsoft.AppPlatform/stable/2023-12-01/appplatform.json. | Paid | API Key | Yes | Profile | |
| Azure App Sre Agent API Official Microsoft Azure REST API OpenAPI specification for specification/app/resource-manager/Microsoft.App/SreAgent/stable/2026-01-01/sreagent.json. | Paid | API Key | Yes | Profile | |
| Azure Appconfiguration App Configuration API Official Microsoft Azure REST API OpenAPI specification for specification/appconfiguration/data-plane/AppConfiguration/stable/2026-04-01/appconfiguration.json. | Paid | API Key | Yes | Profile | |
| Azure Artifactsigning Artifact Signing API Official Microsoft Azure REST API OpenAPI specification for specification/artifactsigning/data-plane/ArtifactSigning/stable/2024-06-15/azure.developer.artifactsigning.json. | Paid | Unknown | Yes | Profile | |
| Azure Automanage API Official Microsoft Azure REST API OpenAPI specification for specification/automanage/resource-manager/Microsoft.Automanage/stable/2022-05-04/automanage.json. | Paid | API Key | Yes | Profile | |
| Azure Automation API Official Microsoft Azure REST API OpenAPI specification for specification/automation/resource-manager/Microsoft.Automation/stable/2024-10-23/openapi.json. | Paid | API Key | Yes | Profile | |
| Azure Compute Admin API Official Microsoft Azure REST API OpenAPI specification for specification/azsadmin/resource-manager/compute/Microsoft.Compute.Admin/stable/2021-09-01/Disks.json. | Paid | API Key | Yes | Profile | |
| Azure Container Service Admin API Official Microsoft Azure REST API OpenAPI specification for specification/azsadmin/resource-manager/containerservice/Microsoft.ContainerService.Admin/stable/2019-11-01/quotas.json. | Paid | API Key | Yes | Profile | |
| Azure DevOps The Azure DevOps basic components of a REST API request/response pair | Freemium | API Key | No | Profile | |
| Azure Fabric Admin API Official Microsoft Azure REST API OpenAPI specification for specification/azsadmin/resource-manager/fabric/Microsoft.Fabric.Admin/stable/2022-03-01/FabricLocation.json. | Paid | Unknown | Yes | Profile | |
| Azure Network Admin API Official Microsoft Azure REST API OpenAPI specification for specification/azsadmin/resource-manager/network/Microsoft.Network.Admin/stable/2022-02-01/VirtualNetworkGatewayConnections.json. | Paid | Unknown | Yes | Profile | |
| Azure Update Admin API Official Microsoft Azure REST API OpenAPI specification for specification/azsadmin/resource-manager/update/Microsoft.Update.Admin/stable/2021-07-01/Updates.json. | Paid | API Key | Yes | Profile | |
| Google Cloud Asset API Official Google Cloud Asset API REST API (v1p1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Bigtable Admin API Official Google Cloud Bigtable Admin API REST API (v2) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Build API Official Google Cloud Build API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Channel API Official Google Cloud Channel API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Cloud Composer API Official Google Cloud Composer API REST API (v1beta1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Controls Partner API Official Google Cloud Controls Partner API REST API (v1beta) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud DNS API Official Google Cloud DNS API REST API (v1beta2) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Data Catalog API Official Google Google Cloud Data Catalog API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Data Fusion API Official Google Cloud Data Fusion API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Dataproc API Official Google Cloud Dataproc API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Datastore API Official Google Cloud Datastore API REST API (v1beta1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Deploy API Official Google Cloud Deploy API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Deployment Manager V2 API Official Google Cloud Deployment Manager V2 API REST API (alpha) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud FTP API Official Google Cloud FTP API REST API (v1alpha) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Firestore API Official Google Cloud Firestore API REST API (v1beta1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Functions API Official Google Cloud Functions API REST API (v2alpha) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud IDS API Official Google Cloud IDS API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Memorystore for Memcached API Official Google Cloud Memorystore for Memcached API REST API (v1beta2) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Memorystore for Redis API Official Google Google Cloud Memorystore for Redis API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Number Registry API Official Google Cloud Number Registry API REST API (v1alpha) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud OS Login API Official Google Cloud OS Login API REST API (v1alpha) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Product Registry API Official Google Cloud Product Registry API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Pub/Sub API Official Google Cloud Pub/Sub API REST API (v1beta1a) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Resource Manager API Official Google Cloud Resource Manager API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Run Admin API Official Google Cloud Run Admin API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Runtime Configuration API Official Google Cloud Runtime Configuration API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Scheduler API Official Google Cloud Scheduler API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Search API Official Google Cloud Search API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Cloud Shell API Official Google Cloud Shell API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud Support API Official Google Google Cloud Support API REST API (v2beta) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Cloud TPU API Official Google Cloud TPU API REST API (v1alpha1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Testing API Official Google Cloud Testing API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Tool Results API Official Google Cloud Tool Results API REST API (v1beta3) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Cloud Workstations API Official Google Cloud Workstations API REST API (v1beta) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Compute Engine API Official Google Compute Engine API REST API (alpha) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile |
Start with pricing and auth: free tiers and no-auth APIs are fastest to prototype with. Then check CORS if your app calls the API from the browser, and health before you commit — a great cloud infrastructure API that's been down for a week will block your launch. Each profile below shows all of these signals plus rate limits where documented.