Agent2Agent (A2A) Protocol VS Apache Avro
As of 30 October 2026, Apache Avro is named by 214 companies and Agent2Agent (A2A) Protocol by 340; Agent2Agent (A2A) Protocol skews to companies under 200 people (25% vs 36%), Apache Avro to companies over 1,000 (37% 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, Apache Avro 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%
- Apache Avro: 2–200 employees
- 36%
- Agent2Agent (A2A) Protocol: 1,000+ employees
- 55%
- Apache Avro: 1,000+ employees
- 37%
- Postings per company, 90 days
- 3.5 · 2.1
- 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 | Agent2Agent (A2A) Protocol | share | Apache Avro | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 2 | 1% | 4 | 2% | even |
| 2-10 employees | 15 | 4% | 11 | 5% | even |
| 11-50 employees | 21 | 6% | 28 | 13% | Apache Avro |
| 51-200 employees | 49 | 14% | 39 | 18% | Apache Avro |
| 201-500 employees | 28 | 8% | 30 | 14% | Apache Avro |
| 501-1000 employees | 37 | 11% | 22 | 10% | even |
| 1001-5000 employees | 72 | 21% | 38 | 18% | Agent2Agent (A2A) Protocol |
| 5001-10000 employees | 30 | 9% | 7 | 3% | Agent2Agent (A2A) Protocol |
| 10,001+ employees | 86 | 25% | 35 | 16% | Agent2Agent (A2A) Protocol |
| Segment | Agent2Agent (A2A) Protocol | share | Apache Avro | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 169 | 50% | 109 | 51% | even |
| Business & finance services | 67 | 20% | 54 | 25% | Apache Avro |
| Manufacturing & industry | 41 | 12% | 16 | 7% | Agent2Agent (A2A) Protocol |
| Media & content | 15 | 4% | 4 | 2% | Agent2Agent (A2A) Protocol |
| Utilities & infrastructure | 11 | 3% | 6 | 3% | even |
| Commerce & trade | 9 | 3% | 6 | 3% | even |
| Public, community & associations | 8 | 2% | 4 | 2% | even |
| Health care | 6 | 2% | 3 | 1% | even |
| Property & construction | 6 | 2% | 2 | 1% | even |
| Consumer services & leisure | 5 | 1% | 4 | 2% | even |
| Transport, logistics & rental | 2 | 1% | 3 | 1% | even |
| Automotive | 1 | 0% | – | – | outside top 12 |
| Hospitality & travel | – | – | 2 | 1% | outside top 12 |
| Segment | Agent2Agent (A2A) Protocol | share | Apache Avro | share | Leans |
|---|---|---|---|---|---|
| United States | 221 | 65% | 139 | 65% | even |
| United Kingdom | 29 | 9% | 16 | 7% | even |
| Germany | 17 | 5% | 7 | 3% | even |
| France | 12 | 4% | 4 | 2% | even |
| Canada | 11 | 3% | 4 | 2% | even |
| Spain | 5 | 1% | 4 | 2% | even |
| India | 5 | 1% | 6 | 3% | even |
| Netherlands | 4 | 1% | 3 | 1% | even |
| Portugal | 4 | 1% | 5 | 2% | even |
| Singapore | 4 | 1% | – | – | outside top 12 |
| Australia | 3 | 1% | – | – | outside top 12 |
| Austria | 2 | 1% | 3 | 1% | even |
| Switzerland | – | – | 4 | 2% | outside top 12 |
| Poland | – | – | 3 | 1% | outside top 12 |
| Segment | Agent2Agent (A2A) Protocol | share | Apache Avro | share | Leans |
|---|---|---|---|---|---|
| Data & AI | 628 | 41% | 271 | 43% | even |
| Software engineering | 242 | 16% | 233 | 37% | Apache Avro |
| IT operations & business systems | 153 | 10% | 19 | 3% | Agent2Agent (A2A) Protocol |
| Product, program & project management | 48 | 3% | 4 | 1% | Agent2Agent (A2A) Protocol |
| Unclassified | 37 | 2% | – | – | outside top 12 |
| Sales | 24 | 2% | 4 | 1% | even |
| General management & consulting | 10 | 1% | 2 | 0% | even |
| Engineering (non-software) | 9 | 1% | 4 | 1% | even |
| Business development & strategy | 8 | 1% | – | – | outside top 12 |
| Finance & accounting | 7 | 0% | 1 | 0% | even |
| Customer service & success | 6 | 0% | 3 | 0% | even |
| Construction and civil | 3 | 0% | 3 | 0% | even |
| Logistics warehouse and transport | – | – | 1 | 0% | outside top 12 |
| Quality, safety & environment | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using Agent2Agent (A2A) Protocol →
Companies using Apache Avro →
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.
Apache Avro is named by 214 companies in job postings and Agent2Agent (A2A) Protocol by 340; 0 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/a2a-protocol-vs-apache-avro)
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 Apache Avro: questions
Which is more used, Agent2Agent (A2A) Protocol or Apache Avro?
By companies naming it in their own job postings, Agent2Agent (A2A) Protocol (340) over Apache Avro (214). By website-and-DNS footprint, Apache Avro (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 36% for Apache Avro. 55% of Agent2Agent (A2A) Protocol companies have over 1,000 employees, against 37% for Apache Avro.
Do companies run both?
0 companies name both in their postings, usually Agent2Agent (A2A) Protocol in marketing and Apache Avro 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 Agent2Agent (A2A) Protocol or Apache Avro. Start free, no card.