Azure ^{by Microsoft}

Reference: https://azure.microsoft.com
Free Tier: https://azure.microsoft.com/en-us/free/

Products

• Virtual Machines ➖Create Linux and Windows virtual machines (VMs) in seconds.
• Virtual Machine Scale Sets ➖Apply autoscaling to virtual machines for high availability.
• Azure Kubernetes Service (AKS) ➖Highly available, secure, and fully managed Kubernetes service.
• App Service ➖Build, deploy, and scale web apps on a fully managed platform.
• Azure Functions ➖More than just event-driven serverless compute.
• Container Registry ➖A registry of Docker and Open Container Initiative (OCI) images, with support for all OCI artifacts.
• Azure Cosmos DB ➖Fast NoSQL database with open APIs for any scale. Globally distributed, multi-model database service for any scale.
• Azure SQL Database ➖Managed, intelligent SQL in the cloud.
• Azure Database for MySQL ➖Enterprise-ready, fully managed community MySQL.
• Azure Database for PostgreSQL ➖Fully managed, intelligent, and scalable PostgreSQL.
• Azure Database for MariaDB ➖Enterprise-ready, fully managed community MariaDB.
• Azure Cache for Redis ➖Fully managed, open source–compatible in-memory data store to power fast, scalable applications
• Table Storage ➖A NoSQL key-value store for rapid development using massive semi-structured datasets.
• Azure DevOps ➖Plan smarter, collaborate better, and ship faster with a set of modern dev services.
• Azure Pipelines ➖Continuously build, test, and deploy to any platform and cloud.
• Azure Repos ➖Get unlimited, cloud-hosted private Git repos for your project.
• Visual Studio App Center ➖Integrated developer services for building, testing, releasing, and monitoring mobile and desktop apps.
• Notification Hubs ➖Send push notifications to any platform from any back end.
• API Apps ➖*Quickly build and consume APIs in the cloud using the language of your choice.
• API Management* ➖Hybrid, multi-cloud management platform for APIs across all environments.
• Azure SignalR Service ➖Easily add real-time web functionality to applications.
• Azure Cognitive Search ➖AI-powered cloud search service for mobile and web app development.
• Azure DDoS Protection ➖Protect your Azure resources from Distributed Denial of Service (DDoS) attacks.

AWS ^{by Amazon}

Reference: https://aws.amazon.com
Free Tier: https://aws.amazon.com/free

Products

• EC2 ➖Virtual servers in the cloud.
• Simple Storage Service (S3) ➖An object storage service. Scalable storage in the cloud.
• Aurora ➖High performance managed relational database, supported both MySQL and PostgresQL.
• DynamoDB ➖Managed NoSQL database.
• RDS ➖Managed relational database service for MySQL, PostgreSQL, Oracle, SQL Server, and MariaDB.
• Lambda ➖Run code without thinking about servers.
• Virtual private cloud (VPC) ➖Isolated cloud resources.
• MQ ➖Managed message broker service for Apache ActiveMQ.
• Amazon Elastic Container Service (ECS) ➖Highly secure, reliable, and scalable way to run containers.
• Amazon Elastic Kubernetes Service (EKS) ➖The most trusted way to run Kubernetes.
• DocumentDB ➖Fully managed document database (with MongoDB compatibility).
• CloudWatch ➖Monitor resources and applications.
• API Gateway ➖Create, maintain, and secure APIs at any scale.
• Device Farm ➖Improve the quality of your web and mobile applications by testing across desktop browsers and real mobile devices hosted in the AWS Cloud.
• CloudFront ➖Fast, highly secure and programmable content delivery network (CDN).
• DocumentDB (with MongoDB compatibility) ➖Fast, scalable, highly available MongoDB-compatible database service.
• Elastic Block Store (EBS) ➖EC2 block storage volumes.
• Elastic File System (EFS) ➖Fully managed file system for EC2.
• S3 Glacier ➖Low-cost archive storage in the cloud.
• Backup ➖Centralized backup across AWS services.

GCP ^{by Google}

Reference: https://cloud.google.com/gcp
Free Tier: https://cloud.google.com/free

AliCloud ^{by Alibaba}

Reference: https://alibabacloud.com