AWS SLACloud vendor · Uptime guarantee, credits and support
Promise vs reality
Status history since Sep 23, 2025
All incidents, weighted: 99.852% · Downtime- Services with an SLA
- 6/6
- Highest SLA
- 99.999%
- Lowest observed, 365d
- 99.178%
- Fastest support
- 5 min
Services and tiers
- AWS LambdaCompute · measured monthly · SLA of May 5, 2022
- StandardAll Lambda functions per AWS region99.95%credit 10% to 100%
- Amazon BedrockAI models · measured monthly · SLA of Oct 4, 2023
- StandardAmazon Bedrock APIs for models available on Bedrock, per AWS region99.9%credit 10% to 100%
- Amazon DynamoDBDatabases · measured monthly · SLA of May 14, 2025
- Standard SLAAny DynamoDB tables in the region that are not Global Tables99.99%credit 10% to 100%
- Global Tables SLAAll tables in the region are part of Global Tables for the whole month and the customer makes reasonable attempts to fail over99.999%credit 10% to 100%
- Amazon EC2Compute · measured monthly · SLA of May 25, 2022
- Region-LevelAll running instances deployed concurrently across two or more AZs in the same region (or two regions if the region has one AZ)99.99%credit 10% to 100%
- Instance-LevelEach individual EC2 instance (Single EC2 Instance)99.5%credit 10% to 100%
- Amazon RDS (Multi-AZ)Databases · measured monthly · SLA of Jan 22, 2024
- Multi-AZ DB Instance / Multi-AZ DB ClusterRDS for PostgreSQL, MySQL, MariaDB, SQL Server, Oracle, Db2 with Multi-AZ deployment option99.95%credit 10% to 100%
- Single-DB InstanceRDS database instances with the Single-DB Instance deployment option99.5%credit 10% to 100%
- Amazon S3 (Standard)Storage · measured monthly · SLA of Nov 28, 2023
- S3 Standard (also Express One Zone, Glacier Flexible Retrieval, Glacier Deep Archive)Requests to S3 Standard and other classes not listed separately99.9%credit 10% to 100%
- S3 Intelligent-Tiering, Standard-IA, One Zone-IA, Glacier Instant RetrievalRequests to the infrequent-access storage classes99%credit 10% to 100%
Support response times
PlansFastest first response by plan
- Business Support+Greater of $29/month per account or 9% of monthly AWS charges up to $10K, 7% $10K-$80K, 5% $80K-$250K, 3% over $250K30 min
- Enterprise SupportGreater of $5k/month or 10% of monthly AWS charges up to $150K, 7% $150K-$500K, 5% $500K-$1M, 3% over $1M15 min
- Unified OperationsGreater of $50k/month or 10% of monthly AWS charges up to $1M, 6% $1M-$5M, 5% over $5M (90-day minimum commitment)5 min
- Developer (legacy, closed to new subscriptions)n/a
- Business (legacy, closed to new subscriptions)Minimum $100/month (per AWS FAQ, 'compared to $100 for Business Support previously')1 h
- Enterprise On-Ramp (legacy, being deprecated)Minimum $5,500/month (per AWS FAQ)30 min
- Business Support+
- Business-critical system down< 30 mins
- Production system down< 1 hour
- Production system impaired< 4 hours
- System impaired< 12 hours
- Enterprise Support
- Business/mission-critical system down< 15 mins
- Production system down< 1 hour
- Production system impaired< 4 hours
- System impaired< 12 hours
- Unified Operations
- Mission-critical system down< 5 mins from Incident Management Engineer
- Production system down< 1 hour
- Production system impaired< 4 hours
- System impaired< 12 hours
- Developer (legacy, closed to new subscriptions)No published response targets.
- Business (legacy, closed to new subscriptions)
- Critical issues1 hour
- Enterprise On-Ramp (legacy, being deprecated)
- Critical issues30 minutes
Latest incidents
Status pageSLA changes
- May25Amazon EC2Amazon Compute SLA narrowed to EC2 only; the May 5, 2022 version listed EC2, EBS, ECS and Fargate as Included Services under one SLA. Percentages unchanged (99.99% region, 99.5% instance).Source
- May5Amazon EC2Instance-Level SLA of 99.5% monthly with 10/30/100% credits introduced, replacing the July 22, 2020 'Hourly Commitment' (Single EC2 Instance Hourly Uptime Percentage of at least 90% per clock hour, otherwise that instance hour is not charged).Source
- Mar20Amazon S3 (Standard)S3 Standard credit schedule gained a 100% tier below 95.0% (and a 25% band 95.0-99.0%). April 4, 2018 version: 99.0-99.9% = 10%, less than 99.0% = 25%. March 20, 2019 version: 10% / 25% / 100%. Standard-IA got the same 100% tier below 95%. The 99.9% threshold did not change.Source
- Mar19Amazon EC2Third credit tier added: below 95.0% now earns a 100% credit (February 12, 2018 version topped out at 30% for 'Less than 99.0%').Source
- Nov15Amazon EC2Region-level EC2 (and EBS) commitment raised from 99.95% to 99.99%. June 1, 2013 version: 'Monthly Uptime Percentage ... of at least 99.95%'; November 15, 2017 version: 'of at least 99.99%'. Credit tiers stayed 10% / 30%.Source
About AWS
All SLA pages fetched 2026-09-23. AWS support was restructured: per the AWS Support FAQ, Developer and Business Support closed to new subscriptions on December 2, 2025 and will be discontinued January 1, 2027; Enterprise On-Ramp is supported through December 31, 2026. The current plans page lists only Business Support+, Enterprise Support and Unified Operations, so full response tables for the legacy Developer, Business and Enterprise On-Ramp plans are no longer published; only the critical-issue times quoted in the FAQ are recorded. The S3 change is verified from Wayback snapshots (20181206174531 showing the April 4, 2018 version and 20191002235233 showing the March 20, 2019 version); EC2 changes come from AWS's own historical SLA page.
Amazon Web Services, Inc. (AWS) is a subsidiary of Amazon that provides on-demand cloud computing platforms and APIs to individuals, companies, and governments, on a metered, pay-as-you-go basis. Source
Highest commitment: Amazon DynamoDB, 99.999% (Global Tables SLA).
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