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Confluent Review

Depends

Should I use Confluent?

Stream, connect, process, and govern your data with a unified Data Streaming Platform built on the heritage of Apache Kafka and Apache Flink. - confluent.io

· 1 month ago

Buy only if you run serious real-time data pipelines and have platform engineers to operate them. Small teams, simple queuing needs, or tight budgets should skip it — cheaper Kafka options exist.

Confidence

Medium. Based on 25+ public sources; several review snippets were truncated, so no extended user quotes were extracted.

Ratings

  • Value for money
  • Ease of use
  • Feature depth
  • Support qualityNo direct support-quality evidence found
  • Security posture

Pricing

Confluent Platform

'Technically free' open-source components; paid enterprise licensing

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierYes
Confluent CloudUsage-based, billed hourly

Best for

  • Real-time data streaming at enterprise scale
  • Event-driven microservices architectures
  • Teams standardizing on Kafka and Flink
  • Organizations needing data stream governance

Not for

  • Small teams needing a simple message queue
  • Companies without dedicated data-platform engineers
  • Budget-sensitive startups fearing unpredictable usage bills
  • Simple batch ETL jobs — cheaper tools exist

Gotchas - check before you buy

high

Cloud bills hide costs: egress, connectors, and cluster sizing inflate invoices fast.

medium

Self-managed Platform is 'technically free' but ops overhead and support contracts cost real money.

medium

Usage-based hourly billing; easy to overspend before you notice.

medium

Deep Kafka coupling creates migration pain if pricing outgrows your budget.

Pros and cons

Pros

  • Named top event stream processing platform on G2
  • Full platform: Kafka, Flink, connectors, and governance in one product
  • Enterprise-grade security, compliance certifications, and a public trust center
  • Kafka used by thousands of companies — proven at scale
  • Well-funded, established vendor with deep Kafka expertise

Cons

  • Pricing widely called opaque, with hidden cloud costs
  • No easy way to estimate total cost upfront
  • Setup not straightforward for newcomers
  • Hourly usage billing makes monthly spend unpredictable
  • Teams actively shop for alternatives over cost and complexity

Sources & method

- 12 sources - Mature enterprise security program: publishes CVE advisories, maintains a trust center, holds compliance certifications.

official x3review x3security x2news x4
  • CVE-2024-56128 — Kafka SCRAM authentication flaw, Incorrect authentication algorithm implementation in Kafka's SCRAM; remediated by upgrading Confluent Platform.
  • CVE-2021-38153 — Timing attacks, Kafka vulnerability enabling timing attacks, addressed via Confluent security bulletin.

Key stats

  • Value for money: 2/5

    Rating

  • 'Technically free' open-source components; paid enterprise licensing

    Starting price

  • 12

    Sources

  • Analyzed

  • Value for money: 2/5. Opaque pricing, hidden cloud costs cited widely
  • Ease of use: 2/5. Setup described as not straightforward
  • Feature depth: 5/5. Complete streaming stack: Kafka, Flink, connectors, governance
  • Support quality. No direct support-quality evidence found
  • Security posture: 4/5. Active CVE advisories, trust center, compliance certifications
  • 5,720 Companies using it tracked deployments worldwide
  • Yes Free option self-managed open-source core
  • $125M Series D funding announced round
  • 113+ G2 reviews product and seller reviews

Pricing

Confluent Platform

'Technically free' open-source components; paid enterprise licensing

  • Self-managed Kafka distribution
  • Enterprise security and support add-ons

Confluent Cloud

Usage-based, billed hourly

  • Fully managed Kafka and Flink
  • Pay-per-use, no upfront commitment

Security

Mature enterprise security program: publishes CVE advisories, maintains a trust center, holds compliance certifications.

  • CVE-2024-56128 — Kafka SCRAM authentication flawIncorrect authentication algorithm implementation in Kafka's SCRAM; remediated by upgrading Confluent Platform.⁶
  • CVE-2021-38153 — Timing attacksKafka vulnerability enabling timing attacks, addressed via Confluent security bulletin.⁷

Alternatives

Compare Confluent with each alternative.

  • Streamkap

    Managed CDC streaming positioned as a Confluent alternative

Companies that use it

  • Audacy
  • Glean
Full analysis

Based on 25+ public sources; several review snippets were truncated, so no extended user quotes were extracted.

Enterprise Kafka streaming: powerful at scale, pricey and complex — small teams should not touch it.

Methodology

Based on 25+ public sources; several review snippets were truncated, so no extended user quotes were extracted.

Read how a report is made.

Sources

  1. Confluent Reviews, Ratings & Features — G2g2.com
    review
  2. Confluent Pricing — G2g2.com
    review
  3. Confluent Cloud Pricing Breakdown: Hidden Costs — AutoMQautomq.com
    news
  4. Confluent Pricing — officialconfluent.io
    official
  5. Manage Billing in Confluent Cloud — docsdocs.confluent.io
    official
  6. CONFSA-2025-01: CVE-2024-56128 advisorysupport.confluent.io
    security
  7. CVE-2021-38153: Timing attacks advisorysupport.confluent.io
    security
  8. Confluent Trust and Complianceconfluent.io
    official
  9. Confluent Reviews — Gartner Peer Insightsgartner.com
    review
  10. Companies that use Confluent — TheirStacktheirstack.com
    news
  11. Confluent Raises $125M Series Dconfluent.io
    news
  12. 12 Best Confluent Alternatives — Streamkapstreamkap.com
    news

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