Cisco ACI VS Junos OS
As of 30 October 2026, Junos OS is named by 109 companies and Cisco ACI by 303; Cisco ACI skews to companies under 200 people (25% vs 44%), Junos OS to companies over 1,000 (31% vs 51%).
As of 30 October 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: Cisco ACI's script and mail records show on hundreds of thousands of small sites, Junos OS rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- Cisco ACI: 2–200 employees
- 25%
- Junos OS: 2–200 employees
- 44%
- Cisco ACI: 1,000+ employees
- 51%
- Junos OS: 1,000+ employees
- 31%
- Postings per company, 90 days
- 3.7 · 3.9
- 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 | Cisco ACI | share | Junos OS | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 2 | 1% | 1 | 1% | even |
| 2-10 employees | 6 | 2% | 8 | 7% | Junos OS |
| 11-50 employees | 30 | 10% | 14 | 13% | Junos OS |
| 51-200 employees | 41 | 14% | 26 | 24% | Junos OS |
| 201-500 employees | 33 | 11% | 20 | 18% | Junos OS |
| 501-1000 employees | 35 | 12% | 6 | 6% | Cisco ACI |
| 1001-5000 employees | 70 | 23% | 17 | 16% | Cisco ACI |
| 5001-10000 employees | 25 | 8% | 6 | 6% | Cisco ACI |
| 10,001+ employees | 61 | 20% | 11 | 10% | Cisco ACI |
| Segment | Cisco ACI | share | Junos OS | share | Leans |
|---|---|---|---|---|---|
| Business & finance services | 103 | 34% | 7 | 6% | Cisco ACI |
| Technology & software | 101 | 33% | 64 | 59% | Junos OS |
| Property & construction | 25 | 8% | – | – | outside top 12 |
| Manufacturing & industry | 23 | 8% | 12 | 11% | Junos OS |
| Public, community & associations | 12 | 4% | 3 | 3% | even |
| Transport, logistics & rental | 9 | 3% | – | – | outside top 12 |
| Utilities & infrastructure | 8 | 3% | 15 | 14% | Junos OS |
| Commerce & trade | 6 | 2% | 1 | 1% | even |
| Consumer services & leisure | 6 | 2% | 3 | 3% | even |
| Media & content | 5 | 2% | 2 | 2% | even |
| Health care | 4 | 1% | 2 | 2% | even |
| Automotive | 1 | 0% | – | – | outside top 12 |
| Segment | Cisco ACI | share | Junos OS | share | Leans |
|---|---|---|---|---|---|
| United States | 198 | 65% | 83 | 76% | Junos OS |
| France | 16 | 5% | 1 | 1% | Cisco ACI |
| United Kingdom | 15 | 5% | 7 | 6% | even |
| Germany | 11 | 4% | 4 | 4% | even |
| Canada | 8 | 3% | – | – | outside top 12 |
| Belgium | 6 | 2% | – | – | outside top 12 |
| Singapore | 5 | 2% | 1 | 1% | even |
| Australia | 4 | 1% | 4 | 4% | Junos OS |
| Brazil | 4 | 1% | – | – | outside top 12 |
| India | 4 | 1% | 1 | 1% | even |
| Italy | 3 | 1% | – | – | outside top 12 |
| Netherlands | 3 | 1% | 1 | 1% | even |
| Poland | – | – | 2 | 2% | outside top 12 |
| Switzerland | – | – | 1 | 1% | outside top 12 |
| Czechia | – | – | 1 | 1% | outside top 12 |
| Mexico | – | – | 1 | 1% | outside top 12 |
| Segment | Cisco ACI | share | Junos OS | share | Leans |
|---|---|---|---|---|---|
| IT operations & business systems | 704 | 48% | 359 | 62% | Junos OS |
| Engineering (non-software) | 408 | 28% | 20 | 3% | Cisco ACI |
| Software engineering | 48 | 3% | 56 | 10% | Junos OS |
| Sales | 37 | 3% | 29 | 5% | Junos OS |
| Construction and civil | 34 | 2% | – | – | outside top 12 |
| Product, program & project management | 14 | 1% | 2 | 0% | even |
| Quality, safety & environment | 9 | 1% | 2 | 0% | even |
| Customer service & success | 7 | 0% | 15 | 3% | Junos OS |
| Data & AI | 7 | 0% | – | – | outside top 12 |
| Administration & office | 4 | 0% | 1 | 0% | even |
| General management & consulting | 4 | 0% | 2 | 0% | even |
| Skilled trades and field service | 4 | 0% | 4 | 1% | even |
| Agriculture and environment | – | – | 1 | 0% | outside top 12 |
| Education & training | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using Cisco ACI →
Companies using Junos OS →
routing switching wireless ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Junos OS is named by 109 companies in job postings and Cisco ACI by 303; 0 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/cisco-aci-vs-juniper-junos)
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.
Cisco ACI vs Junos OS: questions
Which is more used, Cisco ACI or Junos OS?
By companies naming it in their own job postings, Cisco ACI (303) over Junos OS (109). By website-and-DNS footprint, Junos OS (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses Cisco ACI?
25% of Cisco ACI companies have 2 to 200 employees, against 44% for Junos OS. 51% of Cisco ACI companies have over 1,000 employees, against 31% for Junos OS.
Do companies run both?
0 companies name both in their postings, usually Cisco ACI in marketing and Junos OS 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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