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Amazon EC2
Amazon Elastic Compute Cloud (Amazon EC2) provides scalable computing capacity in the Amazon Web Services (AWS) Cloud. Using Amazon EC2 eliminates your need to invest in hardware up front, so you can develop and deploy applications faster. You can use Amazon EC2 to launch as many or as few virtual servers as you need, configure security and networking, and manage storage. Amazon EC2 enables you to scale up or down to handle changes in requirements or spikes in popularity, reducing your need to forecast traffic.
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Features of Amazon EC2
Amazon EC2 provides the following features:
Virtual computing environments, known as instances
Preconfigured templates for your instance, known as Amazon Machine Images (AMIs), that package the bits you need for your server (including the operating system and additional software)
Various configurations of CPU, memory, storage, and networking capacity for your instances, known as instance types
Secure login information for your instances using key pairs (AWS stores the public key, and you store the private key in a secure place)
Storage volumes for temporary data that's deleted when you stop, hibernate, or terminate your instance, known as instance store volumes
Persistent storage volumes for your data using Amazon Elastic Block Store (Amazon EBS), known as Amazon EBS volumes
Multiple physical locations for your resources, such as instances and Amazon EBS volumes, known as Regions and Availability Zones
A firewall that enables you to specify the protocols, ports, and source IP ranges that can reach your instances using security groups
Static IPv4 addresses for dynamic cloud computing, known as Elastic IP addresses
Metadata, known as tags, that you can create and assign to your Amazon EC2 resources
Virtual networks you can create that are logically isolated from the rest of the AWS Cloud, and that you can optionally connect to your own network, known as virtual private clouds (VPCs)
For more information about the features of Amazon EC2, see the Amazon EC2 product page
Elastic Container Service (ECS)
Amazon EC2 Container Service (Amazon ECS ) is a container management service that supports Docker containers. ECS allows you to run applications on a managed cluster of Amazon EC2 instances. With Amazon ECS, you do not need to install, operate, and scale your own cluster management infrastructure.
You can use API calls to launch and stop Docker-enabled applications, query the complete state of your cluster, and access many familiar features such as security groups, Elastic Load Balancing, EBS volumes, and IAM roles. You can use Amazon ECS to schedule the placement of containers across your cluster, based on your resource needs and availability requirements. You can also integrate your own scheduler or third-party schedulers to meet business or application specific requirements.
There is no additional charge for Amazon EC2 Container Service. You pay for the AWS resources (such as EC2 instances or EBS volumes) you create to store and run your application.
- Recommendation
Use ECS for any containerized application such as microservices and long-running async tasks (similar to AWS Batch) running workloads that are not supported by Fargate. Adds high overhead of managing and scaling EC2 instances, but gives high amount of control over the hardware type (GPU, specific CPU generations). Allows on-host debuggability (ssh in and look around), and allows control over running “supporting” daemons on the host (both containerized and not), like metric agents, log pushers, etc. It is a simpler hop from ECS to Fargate when ready. Of course currently a one-way door if your end goal is Lambda.
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