AWS Outposts Specialized2018年〜
A hybrid cloud service that extends AWS infrastructure and services to on-premises locations
What It Does
AWS Outposts is a service that physically installs AWS infrastructure, services, APIs, and tools in your on-premises data center or colocation facility. AWS-designed and manufactured racks or servers are shipped and installed at your facility, seamlessly connected to an AWS Region. You can run key AWS services like EC2, EBS, S3, ECS, EKS, and RDS on-premises, all managed through the AWS Management Console and APIs.
Use Cases
Used when data residency requirements mandate keeping data within a country, for real-time processing requiring low latency, local data processing at edge locations like factories and retail stores, hybrid workloads requiring tight coupling with existing on-premises systems, and as an intermediate step in phased cloud migration.
Everyday Analogy
Think of it like a branch office. You can use the same business systems and procedures (APIs) as headquarters (AWS Region) at a local branch office (on-premises). The branch's equipment is managed and maintained by headquarters, and it's always connected to the headquarters network, so you get the same experience regardless of where you work.
What Is Outposts?
AWS Outposts delivers a true hybrid cloud experience. Traditional hybrid clouds required using different tools and APIs for on-premises and cloud, but with Outposts, you use the same AWS APIs, console, and CLI on-premises. It comes in two form factors: Outposts rack (42U full rack) and Outposts servers (1U/2U servers), which you choose based on the scale you need. AWS handles all equipment delivery, installation, maintenance, and software updates.
Available Services and Architecture
Many AWS services are available on Outposts, including EC2 instances, EBS volumes, S3 on Outposts, ECS, EKS, RDS, ElastiCache, and EMR. Outposts is configured as a subnet within the parent Region's VPC, so on-premises resources and Region resources can communicate within the same VPC. Connectivity to the Region is maintained through AWS Direct Connect or VPN, and IAM authentication/authorization and CloudWatch monitoring are integrated with the Region. For specific implementation methods of available services and architecture, specialized books (Amazon) also provide detailed coverage.
Deployment Considerations
There are several considerations when deploying Outposts. First, the installation site must meet power, cooling, and network connectivity requirements. An Outposts rack requires approximately 20.5 kVA of power and adequate air conditioning. If connectivity to the Region is lost, locally running instances continue to operate, but launching new instances and API calls are restricted. Pricing is based on a 3-year subscription (all upfront, partial upfront, or no upfront), which differs from on-demand pay-as-you-go pricing.
Things to Watch Out For
- Outposts requires a 3-year subscription contract, so it's not suited for short-term use. Consider it when there are long-term on-premises requirements
- Understanding the operational limitations when Region connectivity is lost is important. Design network redundancy in advance
