List of Apache Cassandra Customers
Apache Software Foundation
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Since 2010, our global team of researchers has been studying Apache Cassandra customers around the world, aggregating massive amounts of data points that form the basis of our forecast assumptions and perhaps the rise and fall of certain vendors and their products on a quarterly basis.
Each quarter our research team identifies companies that have purchased Apache Cassandra for Database Management, Open-Source Database from public (Press Releases, Customer References, Testimonials, Case Studies and Success Stories) and proprietary sources, including the customer size, industry, location, implementation status, partner involvement, LOB Key Stakeholders and related IT decision-makers contact details.
Companies using Apache Cassandra for Database Management, Open-Source Database include: AT&T, a United States based Communications organisation with 132590 employees and revenues of $125.65 billion, Energy Transfer, a United States based Oil, Gas and Chemicals organisation with 22311 employees and revenues of $85.54 billion, T-Mobile, a United States based Communications organisation with 70000 employees and revenues of $81.40 billion, Tata Motors, a India based Manufacturing organisation with 91496 employees and revenues of $49.62 billion, Royal Bank of Canada, a Canada based Banking and Financial Services organisation with 96628 employees and revenues of $48.64 billion and many others.
Contact us if you need a completed and verified list of companies using Apache Cassandra, including the breakdown by industry (21 Verticals), Geography (Region, Country, State, City), Company Size (Revenue, Employees, Asset) and related IT Decision Makers, Key Stakeholders, business and technology executives responsible for the IaaS software purchases.
The Apache Cassandra customer wins are being incorporated in our Enterprise Applications Buyer Insight and Technographics Customer Database which has over 100 data fields that detail company usage of IaaS software systems and their digital transformation initiatives. Apps Run The World wants to become your No. 1 technographic data source!
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| Logo | Customer | Industry | Empl. | Revenue | Country | Vendor | Application | Category | When | SI | Insight |
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Activision Blizzard | Professional Services | 13000 | $7.5B | United States | Apache Software | Apache Cassandra | Database Management,Open-Source Database | 2014 | n/a |
In 2014, Activision Blizzard implemented Apache Cassandra as its Database Management platform to enable always-on, low-latency data services for player-facing applications. The decision followed a multi-year evaluation that began in 2011 during which the company tested Oracle, MongoDB and Infobright while seeking a platform capable of supporting real-time personalized experiences and high data availability.
Apache Cassandra was provisioned as a scalable NoSQL cluster to support high write throughput and fast reads, functioning as the central data store for real-time event ingestion, session state, and player profile lookups. The implementation emphasized availability and horizontal scale, with Cassandra serving as the platform layer for applications that required fast performance and no downtime.
Operationally the Database Management deployment was embedded in consumer technology and player engagement workflows, enabling real-time messaging and highly personalised communication to players based on in-game events. The platform integration focused on linking game backend event streams to personalization pipelines and messaging systems to deliver targeted communications during the 2014 release of Call of Duty: Advanced Warfare.
Governance followed an iterative trial and stabilization approach, moving from repeated database experiments to a sustained production commitment to Apache Cassandra, and for the first time in five years the company did not switch to another database. Activision Blizzard reported that the personalized messaging and engagement workflows enabled for Advanced Warfare relied on Cassandra, and that the database was instrumental in delivering the real-time, always-available data the team required.
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AT&T | Communications | 132590 | $125.6B | United States | Apache Software | Apache Cassandra | Database Management,Open-Source Database | 2015 | n/a |
In 2015 AT&T implemented Apache Cassandra under the Database Management category, deploying the database across production, development, test, stage and performance environments. The deployment of Apache Cassandra was positioned to support distributed, high-availability storage requirements within AT&T’s engineering and operations stacks.
Implementation work included installing and configuring Apache Cassandra clusters and defining application keyspaces, with explicit determination and application of replication factors for each keyspace. Configuration activities focused on multi datacenter cluster topology, replication strategy selection and operational tasks required to maintain consistent keyspace definitions across environments.
The program delivered a heterogeneous multi-database operational footprint, implementing and maintaining multi Datacenter Cassandra, Scylla and Couchbase clusters to coexist within AT&T’s Database Management landscape. Integration emphasis was on cross-cluster data distribution and ensuring keyspace replication and topology alignment between Cassandra and the other NoSQL clusters for application consistency.
Operational governance centered on database administration practices, including ongoing cluster configuration management, keyspace lifecycle control and replication factor governance to support application teams. Routine operational processes described include environment-specific provisioning, cluster maintenance workflows and coordinated configuration management across Prod, Dev, Test, Stage and Performance sites.
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Energy Transfer | Oil, Gas and Chemicals | 22311 | $85.5B | United States | Apache Software | Apache Cassandra | Database Management,Open-Source Database | 2018 | n/a |
In 2018, Energy Transfer deployed Apache Cassandra as part of its Database Management,Open-Source Database footprint. Apache Cassandra was provisioned to support large scale operational and big data workloads within the Database Technologies organization, aligned with centralized data protection and cloud compute initiatives led by IT.
The Apache Cassandra implementation emphasized distributed storage architecture, node replication, tunable consistency settings, and partitioned data modeling to support high availability and sustained operational throughput. Operational modules included cluster provisioning, monitoring and automation for backups and restores, and integration with the companys data protection processes managed by the Database Technologies group. Standard Open-Source Database operational tasks such as capacity planning and node lifecycle management were codified into runbooks and automation playbooks.
Apache Cassandra coexisted within a polyglot persistence environment alongside Couchbase, MongoDB, MySQL, Oracle databases, GoldenGate, and Microsoft SQL Server instances as reflected in the database organization’s technology portfolio. Data movement and synchronization patterns were coordinated with these existing database technologies, and the Cassandra tier fed IT operational intelligence and machine learning initiatives overseen by the same IT teams. Connectivity was implemented to support operational integration across the broader Bigdata platform rather than to consolidate to a single engine.
Governance for the Cassandra deployment was driven by Database Technologies and Data Protection functions, with program management oversight for multi million dollar enterprise projects and Cloud FinOps stewardship for cloud compute and database spend. Database leadership reported improved data security and operational efficiency from comprehensive database and protection practices, and separate Oracle Cloud Infrastructure initiatives delivered documented cost savings and enhanced scalability for related cloud compute services.
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Ericsson Japan | Manufacturing | 900 | $100M | Japan | Apache Software | Apache Cassandra | Database Management,Open-Source Database | 2020 | n/a |
In 2020 Ericsson Japan deployed Apache Cassandra as its chosen Database Management platform to support distributed data needs within its service delivery environment. Apache Cassandra was provisioned to provide scalable, fault tolerant storage for operational and telemetry workloads associated with network support and integration tasks.
The implementation centered on clustered node configurations, replication policy configuration, and standard Cassandra administrative processes such as node provisioning, repair, compaction scheduling, and backup orchestration. Software Update Management for database software and rolling upgrades became part of the operational runbook, aligning with the support engineer responsibilities for troubleshooting, fault reproduction and software update handling.
The runtime environment is Linux based, and the deployment was operated alongside existing operational tooling referenced in hiring and support materials, including ZooKeeper, VCS Veritas Cluster Server and PostgreSQL as adjacent technologies in the stack. Support teams in Yokohama and the broader Service Delivery organization configured and integrated Cassandra nodes into new and live customer networks, collaborating with customer technical staff, operations managers, service engineers, sales, R&D, third party suppliers and local authorities.
Operational governance emphasized on-call roster management, Customer Support Request handling and investigation reporting workflows, together with proactive knowledge sharing across Ericsson units. Ericsson Japan Apache Cassandra Database Management supports network operations and service delivery functions by embedding database operational practices into existing support processes and escalation paths.
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Goodman Group | Construction and Real Estate | 971 | $320M | Australia | Apache Software | Apache Cassandra | Database Management,Open-Source Database | 2021 | n/a |
In 2021 Goodman Group implemented Apache Cassandra as a Database Management,Open-Source Database. Goodman Group deployed Apache Cassandra to establish a horizontally scalable, distributed data store to support enterprise data management and analytics for construction and real estate business functions.
The implementation configured Apache Cassandra as a multi-node cluster using the wide column data model and Cassandra Query Language CQL for operational access. Configuration work emphasized partitioning and replication strategy, tunable consistency levels, compaction and compaction strategy configuration, schema design for column families, and support for high write throughput and time series patterns common to asset and telemetry data.
Operational access was delivered through CQL endpoints and native drivers to feed application services and analytical consumers, with focus on data modeling patterns that reduce tombstone growth and optimize read paths. Administration practices included node provisioning, repair and compaction maintenance, snapshot and incremental backup planning, and standard monitoring and alerting workflows aligned with Cassandra operational needs.
Governance centered on schema change controls, capacity planning and consistency policy documentation to manage wide column schema evolution across teams. The narrative reflects an enterprise-grade Apache Cassandra rollout within Goodman Group that emphasizes cluster configuration, operational procedures, and data modeling discipline appropriate for the Database Management,Open-Source Database category.
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Manufacturing | 59344 | $26.4B | India | Apache Software | Apache Cassandra | Database Management,Open-Source Database | 2022 | n/a |
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Banking and Financial Services | 96628 | $48.6B | Canada | Apache Software | Apache Cassandra | Database Management,Open-Source Database | 2021 | n/a |
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Communications | 70000 | $81.4B | United States | Apache Software | Apache Cassandra | Database Management,Open-Source Database | 2017 | n/a |
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Manufacturing | 91496 | $49.6B | India | Apache Software | Apache Cassandra | Database Management,Open-Source Database | 2019 | n/a |
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Insurance | 14000 | $5.6B | United States | Apache Software | Apache Cassandra | Database Management,Open-Source Database | 2015 | n/a |
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Buyer Intent: Companies Evaluating Apache Cassandra
ARTW Buyer Intent uncovers actionable customer signals, identifying software buyers actively evaluating Apache Cassandra. Gain ongoing access to real-time prospects and uncover hidden opportunities. Companies Actively Evaluating Apache Cassandra for Database Management, Open-Source Database include:
- Delivery Master Software, a United Kingdom based Professional Services organization with 15 Employees
- Apea, a United States based Professional Services company with 500 Employees
- Michigan Conference of Teamsters Welfare Fund, a United States based Insurance organization with 96 Employees
Discover Software Buyers actively Evaluating Enterprise Applications
| Logo | Company | Industry | Employees | Revenue | Country | Evaluated |
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Delivery Master Software | Professional Services | 15 | $3M | United Kingdom | 2026-08-27 |
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Apea | Professional Services | 500 | $95M | United States | 2026-08-09 |
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Michigan Conference of Teamsters Welfare Fund | Insurance | 96 | $317M | United States | 2026-04-23 |
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Professional Services | 170 | $34M | United States | 2026-04-08 |
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Professional Services | 83334 | $41.5B | United States | 2026-02-11 |
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Government | 500 | $50M | India | 2025-12-11 |
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Education | 14800 | $1.3B | Canada | 2025-02-10 |
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Manufacturing | 262647 | $203.5B | South Korea | 2024-09-23 |
FAQ - APPS RUN THE WORLD Apache Cassandra Coverage
Apache Cassandra is a Database Management, Open-Source Database solution from Apache Software.
Companies worldwide use Apache Cassandra, from small firms to large enterprises across 21+ industries.
Organizations such as AT&T, Energy Transfer, T-Mobile, Tata Motors and Royal Bank of Canada are recorded users of
Apache Cassandra for Database Management, Open-Source Database.
Companies using Apache Cassandra are most concentrated in Communications, Oil, Gas and Chemicals and Manufacturing, with adoption spanning over 21 industries.
Companies using Apache Cassandra are most concentrated in United States, India and Canada, with adoption tracked across 195 countries worldwide. This global distribution highlights the popularity of Apache Cassandra across Americas, EMEA, and APAC.
Companies using Apache Cassandra range from small businesses with 0-100 employees - 0%, to mid-sized firms with 101-1,000 employees - 18.18%, large organizations with 1,001-10,000 employees - 0%, and global enterprises with 10,000+ employees - 81.82%.
Customers of Apache Cassandra include firms across all revenue levels — from $0-100M, to $101M-$1B, $1B-$10B, and $10B+ global corporations.
Contact APPS RUN THE WORLD to access the full verified Apache Cassandra customer database with detailed Firmographics such as industry, geography, revenue, and employee breakdowns as well as key decision makers in charge of Database Management, Open-Source Database.