AWS IoT Greengrass is software that elongate cloud capabilities to local devices. This enables devices to collect and analyze data closer to the source of information, react autonomously to local events, and communicate with each other on local networks with security.
Initially what you couldn’t do was add resources that were created using AWS Console or AWS CLI to an existing stack or group these resources in a new stack to manage them is a better and more efficient way. As this was the most requested feature to AWS for CloudFormation the wait has finally ended.
One of the main reasons why most of the companies move their IT services to cloud is to save money. With AWS it is common knowledge that EC2 reserved instance is at a discounted rate. RDS is another service that can be reserved.
AWS ACM lets you easily provision, manage and deploy (SSL / TLS certificates) for the use of AWS services. It secures network communications and establishes the identity of websites over internet. SSL / TLS certificates provisioned through AWS are free and user only pays for the AWS resources created to run the application.
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