Cisco ACI VS Cisco IOS
As of 30 October 2026, Cisco IOS is named by 175 companies and Cisco ACI by 303; Cisco ACI skews to companies under 200 people (25% vs 42%), Cisco IOS to companies over 1,000 (37% 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, Cisco IOS 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%
- Cisco IOS: 2–200 employees
- 42%
- Cisco ACI: 1,000+ employees
- 51%
- Cisco IOS: 1,000+ employees
- 37%
- Postings per company, 90 days
- 3.7 · 2.6
- 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 | Cisco IOS | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 2 | 1% | 1 | 1% | even |
| 2-10 employees | 6 | 2% | 13 | 7% | Cisco IOS |
| 11-50 employees | 30 | 10% | 20 | 11% | even |
| 51-200 employees | 41 | 14% | 40 | 23% | Cisco IOS |
| 201-500 employees | 33 | 11% | 23 | 13% | Cisco IOS |
| 501-1000 employees | 35 | 12% | 14 | 8% | Cisco ACI |
| 1001-5000 employees | 70 | 23% | 35 | 20% | Cisco ACI |
| 5001-10000 employees | 25 | 8% | 9 | 5% | Cisco ACI |
| 10,001+ employees | 61 | 20% | 20 | 11% | Cisco ACI |
| Segment | Cisco ACI | share | Cisco IOS | share | Leans |
|---|---|---|---|---|---|
| Business & finance services | 103 | 34% | 21 | 12% | Cisco ACI |
| Technology & software | 101 | 33% | 77 | 44% | Cisco IOS |
| Property & construction | 25 | 8% | 5 | 3% | Cisco ACI |
| Manufacturing & industry | 23 | 8% | 25 | 14% | Cisco IOS |
| Public, community & associations | 12 | 4% | 9 | 5% | even |
| Transport, logistics & rental | 9 | 3% | 4 | 2% | even |
| Utilities & infrastructure | 8 | 3% | 14 | 8% | Cisco IOS |
| Commerce & trade | 6 | 2% | 2 | 1% | even |
| Consumer services & leisure | 6 | 2% | 10 | 6% | Cisco IOS |
| Media & content | 5 | 2% | 3 | 2% | even |
| Health care | 4 | 1% | 5 | 3% | even |
| Automotive | 1 | 0% | – | – | outside top 12 |
| Segment | Cisco ACI | share | Cisco IOS | share | Leans |
|---|---|---|---|---|---|
| United States | 198 | 65% | 137 | 78% | Cisco IOS |
| France | 16 | 5% | 1 | 1% | Cisco ACI |
| United Kingdom | 15 | 5% | 7 | 4% | even |
| Germany | 11 | 4% | 8 | 5% | even |
| Canada | 8 | 3% | 2 | 1% | even |
| Belgium | 6 | 2% | – | – | outside top 12 |
| Singapore | 5 | 2% | – | – | outside top 12 |
| Australia | 4 | 1% | – | – | outside top 12 |
| Brazil | 4 | 1% | – | – | outside top 12 |
| India | 4 | 1% | 2 | 1% | even |
| Italy | 3 | 1% | – | – | outside top 12 |
| Netherlands | 3 | 1% | 2 | 1% | even |
| Switzerland | – | – | 3 | 2% | outside top 12 |
| Portugal | – | – | 2 | 1% | outside top 12 |
| Denmark | – | – | 1 | 1% | outside top 12 |
| GH | – | – | 1 | 1% | outside top 12 |
| Greece | – | – | 1 | 1% | outside top 12 |
| Segment | Cisco ACI | share | Cisco IOS | share | Leans |
|---|---|---|---|---|---|
| IT operations & business systems | 704 | 48% | 497 | 73% | Cisco IOS |
| Engineering (non-software) | 408 | 28% | 32 | 5% | Cisco ACI |
| Software engineering | 48 | 3% | 29 | 4% | even |
| Sales | 37 | 3% | 8 | 1% | even |
| Construction and civil | 34 | 2% | – | – | outside top 12 |
| Product, program & project management | 14 | 1% | – | – | outside top 12 |
| Quality, safety & environment | 9 | 1% | – | – | outside top 12 |
| Customer service & success | 7 | 0% | 7 | 1% | even |
| Data & AI | 7 | 0% | 1 | 0% | even |
| Administration & office | 4 | 0% | 1 | 0% | even |
| General management & consulting | 4 | 0% | 1 | 0% | even |
| Skilled trades and field service | 4 | 0% | 13 | 2% | even |
| Education & training | – | – | 1 | 0% | outside top 12 |
| Facilities cleaning and security | – | – | 1 | 0% | outside top 12 |
| Finance & accounting | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using Cisco ACI →
Companies using Cisco IOS →
routing switching wireless ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Cisco IOS is named by 175 companies in job postings and Cisco ACI by 303; 16 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/cisco-aci-vs-cisco-ios)
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 Cisco IOS: questions
Which is more used, Cisco ACI or Cisco IOS?
By companies naming it in their own job postings, Cisco ACI (303) over Cisco IOS (175). By website-and-DNS footprint, Cisco IOS (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 42% for Cisco IOS. 51% of Cisco ACI companies have over 1,000 employees, against 37% for Cisco IOS.
Do companies run both?
16 companies name both in their postings, usually Cisco ACI in marketing and Cisco IOS 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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