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Michele Cereda
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knowledge base/cloud computing/aws/README.md
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@@ -1,5 +1,6 @@
# Amazon Web Services
1. [Networking](#networking)
1. [Services](#services)
1. [CloudWatch](#cloudwatch)
1. [Resource constraints](#resource-constraints)
@@ -7,6 +8,25 @@
1. [Further readings](#further-readings)
1. [Sources](#sources)
## Networking
VPCs define isolated virtual networking environments.<br/>
AWS accounts include one default VPC for each AWS Region. These allow for immediate launch and connection to EC2
instances.
Subnets are ranges of IP addresses in VPCs.<br/>
Each subnet resides in a single Availability Zone.<br/>
_Public_ subnets have a direct route to an Internet gateway. Resources in public subnets **can** access the public
Internet.<br/>
_Private_ subnets do **not** have a direct route to an Internet gateway. Resources in private subnets **require** a NAT
device to access the public internet.
Gateways connect VPCs to other networks.<br/>
[_Internet gateways_][connect to the internet using an internet gateway] connect VPCs to the Internet.<br/>
[_NAT gateways_][nat gateways] allow resources in private subnets to connect to the Internet, other VPCs, or on-premises
networks. They can communicate with services outside the VPC, but cannot receive unsolicited connection requests.<br/>
[_VPC endpoints_][access aws services through aws privatelink] connect VPCs to AWS services privately, without the need of Internet gateways or NAT devices.
## Services
| Service | Description |
@@ -67,6 +87,7 @@ From [Using service-linked roles]:
- [Constraints for tags][constraints tag]
- [What is CloudWatch]
- [What is Amazon VPC?]
- [Introduction to AWS IAM AssumeRole]
- [AWS JSON policy elements: Principal]
@@ -81,11 +102,15 @@ From [Using service-linked roles]:
[ec2]: ec2.md
<!-- Upstream -->
[access aws services through aws privatelink]: https://docs.aws.amazon.com/vpc/latest/privatelink/privatelink-access-aws-services.html
[aws json policy elements: principal]: https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_principal.html
[best practices for tagging aws resources]: https://docs.aws.amazon.com/whitepapers/latest/tagging-best-practices/tagging-best-practices.html
[connect to the internet using an internet gateway]: https://docs.aws.amazon.com/vpc/latest/userguide/VPC_Internet_Gateway.html
[constraints tag]: https://docs.aws.amazon.com/directoryservice/latest/devguide/API_Tag.html
[nat gateways]: https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-gateway.html
[services that publish cloudwatch metrics]: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/aws-services-cloudwatch-metrics.html
[using service-linked roles]: https://docs.aws.amazon.com/IAM/latest/UserGuide/using-service-linked-roles.html
[what is amazon vpc?]: https://docs.aws.amazon.com/vpc/latest/userguide/what-is-amazon-vpc.html
[what is cloudwatch]: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/WhatIsCloudWatch.html
<!-- Others -->