Amazon Simple Notification Service

Amazon Simple Notification Service pricing and cost programs

Pricing model: Messaging request and delivery usage

On-Demand

Available

Reserved Instances or reserved capacity

Not applicable

Savings Plans

Not applicable

Spot

Not applicable

Billing dimensions: API requests · Notification deliveries · Payload data · Data transfer

Programs and modes: Standard and FIFO topics · SMS · Email · Mobile push

Delivery protocol and destination can add service-specific charges.

Free Tier: Available — verify current offers

Pricing reviewed 2026-07-25. Reviewed against the linked official AWS pricing page. Recheck regional rates and program terms before purchase.

Official AWS pricing

Why implement Amazon Simple Notification Service?

• Decouples publishers from many subscribers and delivers one message to multiple independently scaled processing or notification endpoints.
• Supports Standard and FIFO topics, subscription filtering, delivery retries, dead-letter queues, message archiving or replay for FIFO topics, and server-side encryption.
• Handles application-to-application fan-out and application-to-person notifications without operating pub-sub brokers or channel-specific dispatch servers.

How to implement Amazon Simple Notification Service

1. Choose Standard for broad protocol support and high-throughput at-least-once delivery, or FIFO when supported subscribers require ordering and deduplication by message group.
2. Create an encrypted topic with a least-privilege topic policy, define subscription endpoints and filter policies, confirm external subscriptions, and configure per-subscription retry and dead-letter behavior.
3. Publish a versioned message envelope with stable identifiers, make consumers idempotent, enable delivery status logging or metrics, and test duplicates, unavailable endpoints, filtering, redrive, and unsubscribe controls.

Amazon Simple Notification Service best practices

• Keep topics private, use IAM roles and specific principals, enforce TLS, encrypt sensitive topics, restrict VPC endpoint access where needed, and authenticate unsubscribe operations unless the channel requires otherwise.
• Place SQS queues between topics and workload consumers when durable buffering and independent backpressure are required; attach DLQs and monitor both delivery failures and queue age.
• Version schemas, keep consumers idempotent, tune HTTP retry policies to endpoint capacity, validate signatures for HTTP notifications, and meet opt-in, sender-identity, and regulatory requirements for person-to-person channels.

Amazon Simple Notification Service use cases and server impact

• Fan-out from one event to many queues
• Operational alerts and user notifications
• Ordered messaging through SNS FIFO to SQS FIFO

Replaces pub-sub broker and notification dispatch infrastructure, while subscribers still need durable processing, idempotency, channel compliance, and endpoint capacity controls.

Official implementation resources

• Amazon SNS features and capabilities
• Amazon SNS security best practices
• Amazon SNS message delivery retries

Commonly paired AWS services

• Amazon Simple Queue Service — Message queues
• AWS Lambda — Run code without servers
• Amazon EventBridge — Event bus
• Amazon Data Firehose — Load streaming data into destinations
• Amazon CloudWatch — Metrics & logs
• AWS Key Management Service — Key management
• AWS Identity and Access Management — Identity & access

Architecture patterns using this service

• Design event-driven processing with EventBridge, SNS, SQS, Lambda, and Step Functions — Route events with EventBridge or fan them out with SNS, buffer work in SQS, process messages with Lambda, and orchestrate multi-step work in Step Functions when needed.
• Fan out AWS events to isolated consumers — Publish one event to EventBridge or SNS, give every consumer its own SQS queue, retry policy, and dead-letter queue, and let each consumer scale, fail, and deploy without touching the others.