Apache Cassandra VS Azure Cosmos DB_
As of 4 November 2026, Azure Cosmos DB is named by 838 companies and Apache Cassandra by 1,007; Apache Cassandra skews to companies under 200 people (44% vs 35%), Azure Cosmos DB to companies over 1,000 (42% vs 33%).
As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
The website-and-DNS footprint is not comparable between a marketing suite and a CRM: Apache Cassandra's script and mail records show on hundreds of thousands of small sites, Azure Cosmos DB rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- Apache Cassandra: 2–200 employees
- 44%
- Azure Cosmos DB: 2–200 employees
- 35%
- Apache Cassandra: 1,000+ employees
- 33%
- Azure Cosmos DB: 1,000+ employees
- 42%
- Postings per company, 90 days
- 3.7 · 3.1
- Website or DNS footprint
- 0 · 0
Who chooses which
Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.
| Segment | Apache Cassandra | share | Azure Cosmos DB | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 26 | 3% | 27 | 3% | even |
| 2-10 employees | 74 | 7% | 56 | 7% | even |
| 11-50 employees | 150 | 15% | 102 | 12% | Apache Cassandra |
| 51-200 employees | 223 | 22% | 132 | 16% | Apache Cassandra |
| 201-500 employees | 111 | 11% | 105 | 13% | even |
| 501-1000 employees | 93 | 9% | 68 | 8% | even |
| 1001-5000 employees | 134 | 13% | 143 | 17% | Azure Cosmos DB |
| 5001-10000 employees | 47 | 5% | 53 | 6% | even |
| 10,001+ employees | 149 | 15% | 152 | 18% | Azure Cosmos DB |
| Segment | Apache Cassandra | share | Azure Cosmos DB | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 590 | 59% | 387 | 46% | Apache Cassandra |
| Business & finance services | 196 | 19% | 182 | 22% | Azure Cosmos DB |
| Manufacturing & industry | 55 | 5% | 76 | 9% | Azure Cosmos DB |
| Media & content | 36 | 4% | 19 | 2% | even |
| Utilities & infrastructure | 30 | 3% | 16 | 2% | even |
| Commerce & trade | 27 | 3% | 29 | 3% | even |
| Consumer services & leisure | 26 | 3% | 28 | 3% | even |
| Public, community & associations | 11 | 1% | 21 | 3% | even |
| Transport, logistics & rental | 11 | 1% | 20 | 2% | even |
| Hospitality & travel | 10 | 1% | – | – | outside top 12 |
| Automotive | 6 | 1% | 11 | 1% | even |
| Health care | 6 | 1% | 31 | 4% | Azure Cosmos DB |
| Property & construction | – | – | 9 | 1% | outside top 12 |
| Segment | Apache Cassandra | share | Azure Cosmos DB | share | Leans |
|---|---|---|---|---|---|
| United States | 644 | 64% | 467 | 56% | Apache Cassandra |
| United Kingdom | 54 | 5% | 79 | 9% | Azure Cosmos DB |
| India | 53 | 5% | 26 | 3% | Apache Cassandra |
| France | 26 | 3% | 23 | 3% | even |
| Germany | 23 | 2% | 35 | 4% | even |
| Canada | 14 | 1% | 26 | 3% | even |
| Singapore | 14 | 1% | 9 | 1% | even |
| Spain | 12 | 1% | 11 | 1% | even |
| Italy | 12 | 1% | – | – | outside top 12 |
| Australia | 11 | 1% | 14 | 2% | even |
| Brazil | 11 | 1% | – | – | outside top 12 |
| Portugal | 10 | 1% | – | – | outside top 12 |
| Sweden | – | – | 13 | 2% | outside top 12 |
| Poland | – | – | 10 | 1% | outside top 12 |
| Netherlands | – | – | 9 | 1% | outside top 12 |
| Segment | Apache Cassandra | share | Azure Cosmos DB | share | Leans |
|---|---|---|---|---|---|
| Software engineering | 3,201 | 58% | 1,551 | 45% | Apache Cassandra |
| Data & AI | 1,000 | 18% | 701 | 20% | Azure Cosmos DB |
| IT operations & business systems | 557 | 10% | 322 | 9% | even |
| Engineering (non-software) | 57 | 1% | 166 | 5% | Azure Cosmos DB |
| Finance & accounting | 36 | 1% | 6 | 0% | even |
| Sales | 35 | 1% | 50 | 1% | even |
| Product, program & project management | 25 | 0% | 52 | 1% | even |
| Legal, compliance & risk | 17 | 0% | 3 | 0% | even |
| Customer service & success | 13 | 0% | 15 | 0% | even |
| public safety and protective services | 12 | 0% | – | – | outside top 12 |
| Unclassified | 11 | 0% | 8 | 0% | even |
| Quality, safety & environment | 8 | 0% | 23 | 1% | even |
| General management & consulting | 5 | 0% | 8 | 0% | even |
| logistics warehouse and transport | 4 | 0% | 6 | 0% | even |
| Human resources | 3 | 0% | 2 | 0% | even |
| Marketing & communications | 3 | 0% | 10 | 0% | even |
| construction and civil | 2 | 0% | 2 | 0% | even |
| Education & training | 2 | 0% | 1 | 0% | even |
| Administration & office | 1 | 0% | 4 | 0% | even |
| Design & UX | – | – | 9 | 0% | outside top 12 |
| Business development & strategy | – | – | 7 | 0% | outside top 12 |
| research and science | – | – | 6 | 0% | outside top 12 |
| facilities cleaning and security | – | – | 2 | 0% | outside top 12 |
| procurement and purchasing | – | – | 2 | 0% | outside top 12 |
| arts media and entertainment | – | – | 1 | 0% | outside top 12 |
| healthcare clinical | – | – | 1 | 0% | outside top 12 |
| real estate and property | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using Apache Cassandra →
Companies using Azure Cosmos DB →
nosql document wide column ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Azure Cosmos DB is named by 838 companies in job postings and Apache Cassandra by 1,007; 0 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/apache-cassandra-vs-azure-cosmos-db)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- SegmentsCountry, size and industry from the company profile built from its website.
- Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
Apache Cassandra vs Azure Cosmos DB: questions
Which is more used, Apache Cassandra or Azure Cosmos DB?
By companies naming it in their own job postings, Apache Cassandra (1,007) over Azure Cosmos DB (838). By website-and-DNS footprint, Azure Cosmos DB (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses Apache Cassandra?
44% of Apache Cassandra companies have 2 to 200 employees, against 35% for Azure Cosmos DB. 33% of Apache Cassandra companies have over 1,000 employees, against 42% for Azure Cosmos DB.
Do companies run both?
0 companies name both in their postings, usually Apache Cassandra in marketing and Azure Cosmos DB in sales, or during a migration.
Where do these numbers come from?
From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.
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