WHAT IS AWS SNS SIMPLE NOTIFICATION SERVICE TAMIL | InterviewDOT

Click here - https://www.youtube.com/channel/UCd0U_xlQxdZynq09knDszXA?sub_confirmation=1 to get notifications. AWS Simple Notification Service (SNS) :

Amazon Simple Notification Service (SNS) is a high-availability, durable, secure, fully managed pub / sub-messaging service that enables you to decouple microservices, distributed systems, and serverless applications. Amazon SNS offers topics for high-throughput, push-based, many-to-many messaging. Using Amazon SNS topics, your publisher systems can distribute messages to a large number of subscriber endpoints for parallel processing, including Amazon SQS queues, AWS lambda features, and HTTP / S webhooks. In addition, SNS can be used to forward notifications to end users via mobile push, SMS and email.
An AWS service that allows you to automate the notification through email/SMS/HTTP/SQS/Lambda etc, based on events that happens in your AWS account.

Three components that are important :

"Publisher" "Topics" "Subscriber"

Publishers: The cloud watch alarm/event that gives SNS the message that needs to be sent.
"Topic": Endpoints that you send different messages to.
"Subscriptions": The endpoint that topic sends messages to.

How are you charged for using SNS ?

1. Publishes:
Number of SNS request (i.e the message that need to be sent).

2. Notification Deliveries:
The number of subscribers the message is sent to.

3. Data transfer in/out SNS

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aws sns pricing : https://aws.amazon.com/sns/pricing/?nc1=h_ls
Reliable message delivery
Amazon SNS uses a cross-availability zone message store to ensure a long message life. Amazon SNS topics running on Amazon's proven network infrastructure and data centers are available whenever your applications need them. All messages published to Amazon SNS are stored redundantly on multiple geographically separated servers and data centers. Amazon SNS reliably delivers messages to all valid AWS endpoints, such as Amazon SQS queues and AWS Lambda features.
Automatic scaling of your workload
Amazon SNS leverages the proven AWS cloud to dynamically scale with your application. Amazon SNS is a fully managed service that handles the heavy workload of capacity planning, deployment, monitoring, and patching. The service is designed to handle high-throughput, bundled traffic patterns. In addition, there are no up-front costs and it is not necessary to purchase, install, configure or update messaging software.

Simplify your architecture with message filtering
Amazon SNS helps simplify your pub / sub-messaging architecture by offloading the logic of message filtering from your subscriber systems and the message routing logic of your publisher systems. With Amazon SNS Message Filtering, subscribing endpoints receive only the messages that interest them, rather than all the messages posted on the topic. Amazon CloudWatch provides insight into your filtering activity, and AWS CloudFormation enables you to automatically and securely implement subscription filtering policies .
Keep your messages private and secure
Amazon SNS topic owners can safely store sensitive data by setting topic policies that restrict who is allowed to publish and subscribe to a topic. Amazon SNS also ensures that the data is encrypted during transmission by using Amazon ATS certificates to support the HTTPS API, and can also encrypt stored data with AWS KMS keys. Additionally, with AWS PrivateLink, you can privately publish messages to Amazon SNS topics from your Amazon VPC subnets without having to cross the public Internet. Amazon SNS can also support use cases in regulated markets and is in compliance with compliance programsincluding HIPAA , PCI , ISO , FIPS , SOC and FedRAMP .

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