IBM WebSphere VS Microsoft IIS
As of 30 October 2026, Microsoft IIS is named by 930 companies and IBM WebSphere by 305; IBM WebSphere skews to companies under 200 people (43% vs 42%), Microsoft IIS to companies over 1,000 (34% vs 33%).
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: IBM WebSphere's script and mail records show on hundreds of thousands of small sites, Microsoft IIS rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- IBM WebSphere: 2–200 employees
- 43%
- Microsoft IIS: 2–200 employees
- 42%
- IBM WebSphere: 1,000+ employees
- 33%
- Microsoft IIS: 1,000+ employees
- 34%
- Postings per company, 90 days
- 3.4 · 2.2
- 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 | IBM WebSphere | share | Microsoft IIS | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 3 | 1% | 8 | 1% | even |
| 2-10 employees | 12 | 4% | 47 | 5% | even |
| 11-50 employees | 56 | 18% | 154 | 17% | even |
| 51-200 employees | 62 | 20% | 185 | 20% | even |
| 201-500 employees | 46 | 15% | 135 | 15% | even |
| 501-1000 employees | 24 | 8% | 86 | 9% | even |
| 1001-5000 employees | 44 | 14% | 154 | 17% | Microsoft IIS |
| 5001-10000 employees | 18 | 6% | 49 | 5% | even |
| 10,001+ employees | 40 | 13% | 112 | 12% | even |
| Segment | IBM WebSphere | share | Microsoft IIS | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 199 | 65% | 494 | 53% | IBM WebSphere |
| Business & finance services | 72 | 24% | 185 | 20% | IBM WebSphere |
| Manufacturing & industry | 9 | 3% | 86 | 9% | Microsoft IIS |
| Transport, logistics & rental | 5 | 2% | 15 | 2% | even |
| Commerce & trade | 4 | 1% | 17 | 2% | even |
| Public, community & associations | 3 | 1% | 32 | 3% | Microsoft IIS |
| Consumer services & leisure | 3 | 1% | 19 | 2% | even |
| Media & content | 3 | 1% | 19 | 2% | even |
| Utilities & infrastructure | 3 | 1% | 19 | 2% | even |
| Health care | 2 | 1% | 20 | 2% | even |
| Automotive | 1 | 0% | 7 | 1% | even |
| Property & construction | 1 | 0% | 14 | 2% | even |
| Segment | IBM WebSphere | share | Microsoft IIS | share | Leans |
|---|---|---|---|---|---|
| United States | 182 | 60% | 566 | 61% | even |
| United Kingdom | 17 | 6% | 44 | 5% | even |
| France | 16 | 5% | 43 | 5% | even |
| Canada | 13 | 4% | 28 | 3% | even |
| India | 9 | 3% | 24 | 3% | even |
| Australia | 8 | 3% | 13 | 1% | even |
| Germany | 8 | 3% | 39 | 4% | even |
| Singapore | 7 | 2% | 12 | 1% | even |
| Spain | 5 | 2% | – | – | outside top 12 |
| United Arab Emirates | 4 | 1% | – | – | outside top 12 |
| Switzerland | 4 | 1% | 11 | 1% | even |
| Belgium | 3 | 1% | – | – | outside top 12 |
| Italy | – | – | 20 | 2% | outside top 12 |
| Poland | – | – | 14 | 2% | outside top 12 |
| Brazil | – | – | 11 | 1% | outside top 12 |
| Segment | IBM WebSphere | share | Microsoft IIS | share | Leans |
|---|---|---|---|---|---|
| Software engineering | 1,304 | 53% | 1,178 | 34% | IBM WebSphere |
| IT operations & business systems | 545 | 22% | 1,230 | 35% | Microsoft IIS |
| Data & AI | 56 | 2% | 97 | 3% | even |
| Engineering (non-software) | 25 | 1% | 118 | 3% | Microsoft IIS |
| Product, program & project management | 25 | 1% | 62 | 2% | even |
| Customer service & success | 21 | 1% | 164 | 5% | Microsoft IIS |
| Unclassified | 15 | 1% | – | – | outside top 12 |
| General management & consulting | 8 | 0% | 14 | 0% | even |
| Marketing & communications | 6 | 0% | 8 | 0% | even |
| Quality, safety & environment | 5 | 0% | – | – | outside top 12 |
| Administration & office | 4 | 0% | – | – | outside top 12 |
| Construction and civil | 4 | 0% | – | – | outside top 12 |
| Sales | – | – | 44 | 1% | outside top 12 |
| Research and science | – | – | 24 | 1% | outside top 12 |
| Legal, compliance & risk | – | – | 9 | 0% | outside top 12 |
| Healthcare support and caregiving | – | – | 7 | 0% | outside top 12 |
The companies behind each column
Companies using IBM WebSphere →
Companies using Microsoft IIS →
web app servers ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Microsoft IIS is named by 930 companies in job postings and IBM WebSphere by 305; 100 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/ibm-websphere-vs-microsoft-iis)
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.
IBM WebSphere vs Microsoft IIS: questions
Which is more used, IBM WebSphere or Microsoft IIS?
By companies naming it in their own job postings, Microsoft IIS (930) over IBM WebSphere (305). By website-and-DNS footprint, Microsoft IIS (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses IBM WebSphere?
43% of IBM WebSphere companies have 2 to 200 employees, against 42% for Microsoft IIS. 33% of IBM WebSphere companies have over 1,000 employees, against 34% for Microsoft IIS.
Do companies run both?
100 companies name both in their postings, usually IBM WebSphere in marketing and Microsoft IIS 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.
Get either list your way
The same data as a search, over MCP and the API, as bulk files, or pushed to you as it changes.
Every company on either tool,
with the person who owns it
Filter on IBM WebSphere or Microsoft IIS. Start free, no card.