Hybrid Cloud Infrastructure - Integrating On-Premises and AWS with AWS Outposts
Learn how to extend AWS infrastructure to on-premises environments with AWS Outposts and build hybrid cloud architectures with EC2 integration. Covers design patterns for data residency and low-latency requirements.
Demand for Hybrid Cloud and Where AWS Outposts Fits
While many enterprises adopt a cloud-first strategy, there are plenty of cases where some workloads must remain on-premises due to data residency regulations, ultra-low latency requirements, or the need to leverage existing on-premises investments. AWS Outposts is a fully managed service that extends AWS infrastructure, services, APIs, and tools to your on-premises data centers or colocation facilities. Outposts racks are server racks designed and manufactured by AWS that let you run AWS services such as EC2, EBS, S3, RDS, ECS, and EKS on-premises. You can manage them using the same APIs, console, and CLI as an AWS Region, providing a consistent operational experience across on-premises and cloud environments. Outposts can be seamlessly managed from the AWS console and uses the same APIs as the Region, ensuring high operational consistency.
Outposts Deployment and Configuration Options
Outposts is available in two form factors: 42U rack and 1U/2U server. The rack form factor is suited for workloads requiring large compute and storage capacity, while the server form factor is ideal for space-constrained environments such as retail stores, factories, and healthcare facilities. Outposts is managed through a dedicated network connection (service link) to the AWS Region, and control plane operations are processed in the Region. The local gateway enables direct communication with on-premises networks, integrating seamlessly with existing network infrastructure. EC2 instances run locally on Outposts, minimizing communication latency with on-premises data sources and applications. EBS volumes are also stored locally, keeping storage I/O latency low. Below is a CLI example for launching an instance on Outposts. ```bash aws ec2 run-instances \ --image-id ami-0abcdef1234567890 \ --instance-type m5.xlarge \ --placement '{"OutpostArn": "arn:aws:outposts:ap-northeast-1:123456789012:outpost/op-0123456789abcdef0"}' \ --subnet-id subnet-outpost-0123456789 ```
Hybrid Architecture Design Patterns
In hybrid architectures using Outposts, a common design is to run latency-sensitive workloads on Outposts while offloading burst processing and backups to the Region. In manufacturing, IoT sensor data from factories is processed immediately on EC2 running on Outposts, with aggregated data transferred to S3 or Redshift in the Region for long-term analysis. In finance, trading systems run on Outposts to ensure sub-millisecond latency, while risk analysis and reporting run in the Region. In healthcare, patient data is kept on-premises on Outposts to comply with data residency requirements, while anonymized data is analyzed using machine learning services in the Region. S3 on Outposts enables flexible design of local data processing and data transfer to the Region. Outposts software is automatically updated by AWS, ensuring consistency with the Region is always maintained.
Operations Management and Ensuring Availability
AWS takes responsibility for Outposts operations management, automatically performing hardware monitoring, patching, and firmware updates. The same operational tools available in the Region can be used, including CloudWatch for metrics monitoring, CloudTrail for API auditing, and AWS Config for resource configuration tracking. If the service link between Outposts and the Region is temporarily disconnected, locally running instances continue to operate. However, launching new instances and API operations are deferred until the service link is restored. To ensure high availability, distribute workloads across both Outposts and the Region, with a design that fails over to the Region during outages. AWS Systems Manager can be used to centralize patch management and command execution for instances on Outposts. Establishing a dedicated connection between on-premises and the AWS Region using Direct Connect improves the reliability and bandwidth of the service link, enhancing the stability of the entire hybrid environment. To deepen your infrastructure design knowledge, specialized books on Amazon can also be useful.
Technical Background and Design Philosophy of Hybrid Cloud
The hybrid cloud design philosophy is based on the principle of selecting the optimal execution environment according to workload characteristics. Migrating all workloads to the public cloud is not always the best solution; there are cases where on-premises execution is rational due to data residency regulations, physical constraints on network latency, or tight coupling with existing systems. Recognizing this reality, AWS provides additional edge infrastructure options beyond Outposts: AWS Local Zones and AWS Wavelength. Local Zones place computing resources in major metropolitan areas, achieving single-digit millisecond latency. Wavelength places computing at the edge of 5G networks, delivering ultra-low latency to mobile devices. By combining these three edge infrastructure options (Outposts, Local Zones, Wavelength), you can build hybrid architectures that run AWS services everywhere from data centers to the 5G edge.
Outposts Pricing
Outposts Rack is offered as a 3-year subscription with payment options of all upfront, partial upfront, or no upfront. The minimum configuration starts at several thousand dollars per month, varying by instance type and quantity. Outposts Server is available in 1U/2U sizes starting at approximately $1,500 per month. Power, cooling, and network connectivity infrastructure costs are the customer's responsibility. Evaluate the TCO of the Outposts subscription model against on-premises hardware refresh cycles (3-5 years).
Summary - Building a Hybrid Cloud Foundation
AWS Outposts eliminates the boundary between on-premises and AWS cloud, providing the optimal solution for building hybrid cloud infrastructure with consistent APIs and operational experience. For workloads that require on-premises processing due to data residency requirements, ultra-low latency requirements, or leveraging existing investments, you can apply AWS services and tools as-is. By coordinating with the Region, you can build hybrid architectures that combine local processing with cloud-scale analytics.