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Amazon Simple Notification Service (Amazon SNS) gives users a simple way to receive and send notifications via the cloud. A "push" mechanism is used to deliver notifications to clients, using the "publish-subscribe" (pub-sub) messaging paradigm.
In terms of topics, publishers and subscribers are able to communicate with them through the policies you define. A publisher sends messages to topics they have created or to topics they have permission to publish to
A publisher sends a message to the topic rather than to a specific address. A message is delivered to each subscriber to the topic via Amazon SNS, which matches the topic to their subscriptions to that topic.
Customers can either manage or AWS can manage CMKs through Amazon SNS. Once you send a message to Amazon SNS, it immediately encrypts it using 256-bit AES-GCM.
A number of Availability Zones (AZ) store the messages in encrypted form for durability. They are decrypted just before being delivered to subscribed endpoints, such as Amazon Simple Queue Service (Amazon SQS) queues, AWS Lambda functions, and HTTP and HTTPS webhooks.

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World's no. 1 Online Cloud Computing learning platform

This article will provide you an overview of Azure Policy and how to create Azure policy to help govern your Azure environment.

Azure Policy is a service that allows you to define policies that implement and control a resource's properties
It is a free feature in Azure that allows you to create policies and assign them to the resources. If these policies are not meeting, you receive alerts, and you can take action on those alerts.
Azure Policy can be used to build a custom validation layer against deployments to prevent deviations from customer-defined rules. A minimal amount of extensibility is possible and it is not a general-purpose Azure rules engine.

Benifits of Azure policy:

It is a set of guardrails around all your resources to ensure cloud compliance, prevent misconfigurations, and follow a uniform resource governance plan.
Having all your compliance data in one place will reduce the time you need to audit your environments.
By implementing policies at the core of the Azure platform, you will be able to increase developer productivity and reduce external approval processes.
You can control your cloud spending by controlling and optimizing it, with the help of Azure policy

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