# Apache Storm vs Azure Stream Analytics

**Leader by vioscaleAI score:** Apache Storm

| Attribute | Apache Storm | Azure Stream Analytics |
|---|---|---|
| **vioscaleAI score** | 52 (39% (low)) | 46.3 (14% (low)) |
| activity.commits_last_30d | 55 | - |
| adoption.dependent_repos | 1,756 | - |
| adoption.github_stars | 6,695 | - |
| content.faq | `[{"answer":"An open-source system designed to handle continuous streams of information quickly and reliably, without stopping, with built-in protections against data loss. It is indexed under Streaming Analytics.","source":"https://storm.apache.org","question":"What is Apache Storm?","confidence":0.6},{"answer":"Apache Storm is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://storm.apache.org","question":"Is Apache Storm free to use?","confidence":0.6},{"answer":"Apache Storm supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://storm.apache.org","question":"What platforms does Apache Storm support?","confidence":0.6},{"answer":"Yes. Apache Storm can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://storm.apache.org","question":"Can Apache Storm be self-hosted?","confidence":0.6},{"answer":"Yes. Apache Storm is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/apache/storm","question":"Is Apache Storm open source?","confidence":0.95},{"answer":"Apache Storm is available worldwide. The vendor is headquartered in the United States.","source":"https://storm.apache.org","question":"Where is Apache Storm available?","confidence":0.75}]` | `[{"answer":"A cloud-based service that processes and analyzes streaming data in real time, offering both cloud and edge deployment options. Operates on a pay-as-you-go billing model with a free trial tier available. It is indexed under Streaming Analytics.","source":"https://azure.microsoft.com/acom/etc.clientlibs/onecloud/components/content/reimagine/atomic/carousel/v1/carousel/clientlibs/pricing-styles.ACSHASHbcdafd3e07059ae596973551430292fc.min.css","question":"What is Azure Stream Analytics?","confidence":0.6},{"answer":"Azure Stream Analytics offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://azure.microsoft.com/acom/etc.clientlibs/onecloud/components/content/reimagine/atomic/carousel/v1/carousel/clientlibs/pricing-styles.ACSHASHbcdafd3e07059ae596973551430292fc.min.css","question":"Is Azure Stream Analytics free?","confidence":0.6},{"answer":"We have confirmed browser-based access to Azure Stream Analytics. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://azure.microsoft.com/en-us/pricing/details/azure-sql-managed-instance/single/","question":"What platforms does Azure Stream Analytics support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Azure Stream Analytics, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://azure.microsoft.com/en-us/pricing/details/azure-sql-managed-instance/single/","question":"Can Azure Stream Analytics be self-hosted?","confidence":0.6},{"answer":"We have independently confirmed GDPR for Azure Stream Analytics. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Azure Stream Analytics not holding them. Always confirm compliance directly before you rely on it.","source":"https://azure.microsoft.com/en-us/explore/trusted-cloud/","question":"What security certifications does Azure Stream Analytics have?","confidence":0.7}]` |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true}` |
| description.long | A free and open-source framework that reliably processes continuous streams of data across distributed systems with guaranteed delivery and fault tolerance. | A managed service for processing and analyzing streaming data in real-time, deployable across cloud and edge infrastructure |
| features.capabilities | `{"open_source":true,"pricing_model":"open-source-self-host","deployment_model":"self-hosted"}` | `{"deployment_model":"serverless"}` |
| integrations.count | 2 | - |
| integrations.list | `[{"name":"Hadoop"},{"name":"Kafka"}]` | - |
| language.primary | Java | - |
| license.spdx | Apache-2.0 | - |
| market.availability | `{"hqCountry":"US","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","summary":"Free and open source","freeTier":true,"sourceUrl":"https://storm.apache.org","retrievedAt":"2026-10-15T20:29:14.052Z"}` | `{"type":"usage","currency":"USD","sourceUrl":"https://azure.microsoft.com/en-us/pricing/","retrievedAt":"2026-09-29T15:02:18.255Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | commercial |
| pricing.price_level | free | unknown |
| pricing.transparent | yes | no |
| release.cadence_days | 29 | - |
| release.history | `[{"url":"https://github.com/apache/storm/releases/tag/v3.1.0","date":"2026-09-12T23:01:46Z","type":"stable","version":"v3.1.0"},{"url":"https://github.com/apache/storm/releases/tag/v3.0.0","date":"2026-07-22T22:27:16Z","type":"stable","version":"v3.0.0"},{"url":"https://github.com/apache/storm/releases/tag/v2.8.9","date":"2026-07-22T22:24:51Z","type":"stable","version":"v2.8.9"},{"url":"https://github.com/apache/storm/releases/tag/v2.8.8","date":"2026-05-18T22:03:07Z","type":"stable","version":"v2.8.8"},{"url":"https://github.com/apache/storm/releases/tag/v2.8.7","date":"2026-04-19T17:26:04Z","type":"stable","version":"v2.8.7"},{"url":"https://github.com/apache/storm/releases/tag/v2.8.6","date":"2026-04-07T18:11:58Z","type":"stable","version":"v2.8.6"},{"url":"https://github.com/apache/storm/releases/tag/v2.8.5","date":"2026-03-25T00:05:25Z","type":"stable","version":"v2.8.5"},{"url":"https://github.com/apache/storm/releases/tag/v2.8.4","date":"2026-03-02T15:29:20Z","type":"stable","version":"v2.8.4"},{"url":"https://github.com/apache/storm/releases/tag/v2.8.3","date":"2025-11-02T17:42:34Z","type":"stable","version":"v2.8.3"},{"url":"https://github.com/apache/storm/releases/tag/v2.8.2","date":"2025-08-03T20:48:08Z","type":"stable","version":"v2.8.2"},{"url":"https://github.com/apache/storm/releases/tag/v2.8.1","date":"2025-06-03T00:05:21Z","type":"stable","version":"v2.8.1"},{"url":"https://github.com/apache/storm/releases/tag/v2.8.0","date":"2025-01-24T12:36:59Z","type":"stable","version":"v2.8.0"},{"url":"https://github.com/apache/storm/releases/tag/v2.7.1","date":"2025-01-09T14:24:47Z","type":"stable","version":"v2.7.1"},{"url":"https://github.com/apache/storm/releases/tag/v2.7.0","date":"2025-01-09T14:24:29Z","type":"stable","version":"v2.7.0"}]` | - |
| reliability.status_page | - | yes |
| security.disclosure_policy | - | yes |
| security.gdpr | - | yes |
| security.scorecard | 6 | - |
| security.trust_center | https://storm.apache.org/security-model.html | https://azure.microsoft.com/en-us/explore/security/ |
| security.vulnerabilities | `{"count":6,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.apache.storm%3Astorm-core&per_page=100","last_12m":0,"max_severity":"HIGH"}` | - |

## Capabilities (Streaming Analytics)

| Capability | Apache Storm | Azure Stream Analytics |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Processing model | - | - |
| Delivery guarantee | - | - |
| Streaming sql | - | - |
| Event time watermarks | - | - |
| Stateful processing | - | - |
| Cdc support | - | - |
| Deployment model | Self hosted | Serverless |
| Autoscaling | - | - |
| Connector breadth | - | - |
| Latency class | - | - |
| Open source | ✓ | - |
| SOC2 | - | - |
| Pricing model | Open source self host | - |

*Source: vioscaleAI. Generated 2026-10-16T20:48:18.648Z. "-" = undocumented, not absent.*