33 lines
988 B
Markdown
33 lines
988 B
Markdown
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---
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tags: [AWS]
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---
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# AWS Messaging services
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## SQS
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> SQS: Simple Queue Service
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SQS is a service that allows you to send, store and receive messages between
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apps and software components built in AWS, with automatic encryption. It helps
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with decoupling and scaling.
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As the name indicates, its operating mode is that of a
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[queue](Queue.md) data structure offering first-in, first-out
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and other queue implementations.
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An example application of this would be to set up an SQS queue that receives
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messages and triggers a lambda whenever a new message is added.
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## SNS
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> SNS: Simple Notification Service
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Similar to SQS but the focus is on notifications rather than messages, i.e
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events that fire when something specific happens, not just a message-send event.
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It can be used for passing notifications between applications or to persons
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through SMS, text, push notifications and email.
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**SNS pushes messages out to subscribers while SQS stores the messages until
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someone reads them.**
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