Agent2Agent (A2A) Protocol VS ISO 20022
As of 30 October 2026, ISO 20022 is named by 202 companies and Agent2Agent (A2A) Protocol by 340; Agent2Agent (A2A) Protocol skews to companies under 200 people (25% vs 22%), ISO 20022 to companies over 1,000 (57% vs 55%).
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: Agent2Agent (A2A) Protocol's script and mail records show on hundreds of thousands of small sites, ISO 20022 rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- Agent2Agent (A2A) Protocol: 2–200 employees
- 25%
- ISO 20022: 2–200 employees
- 22%
- Agent2Agent (A2A) Protocol: 1,000+ employees
- 55%
- ISO 20022: 1,000+ employees
- 57%
- Postings per company, 90 days
- 3.5 · 3.3
- 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 | Agent2Agent (A2A) Protocol | share | ISO 20022 | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 2 | 1% | 2 | 1% | even |
| 2-10 employees | 15 | 4% | 11 | 5% | even |
| 11-50 employees | 21 | 6% | 13 | 6% | even |
| 51-200 employees | 49 | 14% | 21 | 10% | Agent2Agent (A2A) Protocol |
| 201-500 employees | 28 | 8% | 25 | 12% | ISO 20022 |
| 501-1000 employees | 37 | 11% | 15 | 7% | Agent2Agent (A2A) Protocol |
| 1001-5000 employees | 72 | 21% | 48 | 24% | ISO 20022 |
| 5001-10000 employees | 30 | 9% | 19 | 9% | even |
| 10,001+ employees | 86 | 25% | 48 | 24% | even |
| Segment | Agent2Agent (A2A) Protocol | share | ISO 20022 | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 169 | 50% | 59 | 29% | Agent2Agent (A2A) Protocol |
| Business & finance services | 67 | 20% | 115 | 57% | ISO 20022 |
| Manufacturing & industry | 41 | 12% | 11 | 5% | Agent2Agent (A2A) Protocol |
| Media & content | 15 | 4% | 3 | 1% | Agent2Agent (A2A) Protocol |
| Utilities & infrastructure | 11 | 3% | 5 | 2% | even |
| Commerce & trade | 9 | 3% | 1 | 0% | Agent2Agent (A2A) Protocol |
| Public, community & associations | 8 | 2% | 2 | 1% | even |
| Health care | 6 | 2% | – | – | outside top 12 |
| Property & construction | 6 | 2% | – | – | outside top 12 |
| Consumer services & leisure | 5 | 1% | 2 | 1% | even |
| Transport, logistics & rental | 2 | 1% | 3 | 1% | even |
| Automotive | 1 | 0% | 1 | 0% | even |
| Segment | Agent2Agent (A2A) Protocol | share | ISO 20022 | share | Leans |
|---|---|---|---|---|---|
| United States | 221 | 65% | 92 | 46% | Agent2Agent (A2A) Protocol |
| United Kingdom | 29 | 9% | 23 | 11% | ISO 20022 |
| Germany | 17 | 5% | 19 | 9% | ISO 20022 |
| France | 12 | 4% | 12 | 6% | ISO 20022 |
| Canada | 11 | 3% | 8 | 4% | even |
| Spain | 5 | 1% | – | – | outside top 12 |
| India | 5 | 1% | 5 | 2% | even |
| Netherlands | 4 | 1% | – | – | outside top 12 |
| Portugal | 4 | 1% | 3 | 1% | even |
| Singapore | 4 | 1% | 3 | 1% | even |
| Australia | 3 | 1% | 5 | 2% | even |
| Austria | 2 | 1% | – | – | outside top 12 |
| Switzerland | – | – | 3 | 1% | outside top 12 |
| Denmark | – | – | 3 | 1% | outside top 12 |
| Lithuania | – | – | 3 | 1% | outside top 12 |
| Segment | Agent2Agent (A2A) Protocol | share | ISO 20022 | share | Leans |
|---|---|---|---|---|---|
| Data & AI | 628 | 41% | 17 | 2% | Agent2Agent (A2A) Protocol |
| Software engineering | 242 | 16% | 214 | 26% | ISO 20022 |
| IT operations & business systems | 153 | 10% | 189 | 23% | ISO 20022 |
| Product, program & project management | 48 | 3% | 94 | 11% | ISO 20022 |
| Unclassified | 37 | 2% | – | – | outside top 12 |
| Sales | 24 | 2% | 11 | 1% | even |
| General management & consulting | 10 | 1% | 11 | 1% | even |
| Engineering (non-software) | 9 | 1% | – | – | outside top 12 |
| Business development & strategy | 8 | 1% | 5 | 1% | even |
| Finance & accounting | 7 | 0% | 56 | 7% | ISO 20022 |
| Customer service & success | 6 | 0% | 5 | 1% | even |
| Construction and civil | 3 | 0% | – | – | outside top 12 |
| Legal, compliance & risk | – | – | 6 | 1% | outside top 12 |
| Manufacturing and production | – | – | 4 | 0% | outside top 12 |
| Marketing & communications | – | – | 4 | 0% | outside top 12 |
The companies behind each column
Companies using Agent2Agent (A2A) Protocol →
Companies using ISO 20022 →
api specs data formats ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
ISO 20022 is named by 202 companies in job postings and Agent2Agent (A2A) Protocol by 340; 0 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/a2a-protocol-vs-iso-20022)
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.
Agent2Agent (A2A) Protocol vs ISO 20022: questions
Which is more used, Agent2Agent (A2A) Protocol or ISO 20022?
By companies naming it in their own job postings, Agent2Agent (A2A) Protocol (340) over ISO 20022 (202). By website-and-DNS footprint, ISO 20022 (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses Agent2Agent (A2A) Protocol?
25% of Agent2Agent (A2A) Protocol companies have 2 to 200 employees, against 22% for ISO 20022. 55% of Agent2Agent (A2A) Protocol companies have over 1,000 employees, against 57% for ISO 20022.
Do companies run both?
0 companies name both in their postings, usually Agent2Agent (A2A) Protocol in marketing and ISO 20022 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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