---
title: "45 SOAP to REST Conversion Statistics (2026)"
description: "Essential data on why enterprises are accelerating their migration from legacy SOAP services to modern REST APIs—and how to execute the transition efficiently"
url: "https://www.dreamfactory.com/hub/soap-to-rest-conversion-statistics"
---

# 45 SOAP to REST Conversion Statistics Every Enterprise Should Know in 2026

Terence Bennett

* January 13, 2026
* Technology

_Essential data on why enterprises are accelerating their migration from legacy SOAP services to modern REST APIs—and how to execute the transition efficiently_

The shift from SOAP to REST has moved from technical preference to business imperative. With [93% of organizations](https://www.postman.com/state-of-api/2025/) now using REST APIs as their dominant architecture, enterprises clinging to legacy SOAP services face mounting integration challenges, slower development cycles, and higher maintenance costs. [DreamFactory's SOAP-to-REST conversion](https://www.dreamfactory.com/connectors/soap-to-rest) addresses this transition directly—automatically parsing WSDL files and transforming legacy services into modern REST endpoints without rewriting code. As the API management market accelerates toward [$32.77 billion by 2032](https://www.fortunebusinessinsights.com/api-management-market-108490), understanding these conversion statistics is critical for enterprise architects planning modernization roadmaps.

---

## **Key Takeaways**

* **REST dominates with 93% adoption** — Organizations have overwhelmingly standardized on REST architecture, making SOAP services increasingly isolated and difficult to integrate
* **SOAP to REST migration delivers 50-70% faster response times** — [Performance benchmarks](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) consistently show REST outperforming SOAP across all industry verticals
* **$120,000 annual infrastructure savings** — Enterprises completing SOAP to REST conversions report [significant cost reductions](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) in bandwidth, maintenance, and development
* **70% of Fortune 500 companies still run 20+ year-old software** — [Legacy modernization](https://www.dreamfactory.com/hub/legacy-system-modernization-statistics) represents a $24.98 billion market opportunity as organizations address technical debt
* **5 minutes to production-ready APIs** — DreamFactory's [automatic generation](https://www.dreamfactory.com/hub/database-api-integration-statistics) eliminates the 6-18 month timeline typical of manual SOAP to REST migrations

---

## **The Surge in SOAP to REST Conversions: 2026 Projections and Market Drivers**

### **1\. API management market valued at $6.89 billion in 2025**

The [current market valuation](https://www.fortunebusinessinsights.com/api-management-market-108490) reflects sustained enterprise investment in API infrastructure. This spending increasingly targets modernization initiatives that convert legacy SOAP services to REST.

### **2\. Market projected to reach $32.77 billion by 2032**

The [$32.77 billion projection](https://www.fortunebusinessinsights.com/api-management-market-108490) represents a 25.0% CAGR—growth fueled by organizations modernizing legacy systems and adopting API-first strategies.

### **3\. Legacy modernization market valued at $24.98 billion**

Organizations are investing [$24.98 billion](https://www.dreamfactory.com/hub/legacy-system-modernization-statistics) specifically in legacy system modernization, with SOAP to REST conversion representing a significant portion of these initiatives.

### **4\. 70% of Fortune 500 companies operate software over two decades old**

[McKinsey research](https://www.dreamfactory.com/hub/legacy-system-modernization-statistics) reveals that 70% of major enterprises still depend on aging systems—many built on SOAP architectures that predate modern integration requirements.

### **5\. U.S. government spends 80% of IT budgets on legacy maintenance**

[GAO reports](https://www.dreamfactory.com/hub/legacy-system-modernization-statistics) indicate federal agencies allocate roughly 80% of IT spending to maintaining legacy systems rather than modernization—a ratio that SOAP to REST conversion can help reverse.

### **6\. \~70% of banks cite legacy integration as a major obstacle**

[Finastra research](https://www.dreamfactory.com/hub/legacy-system-modernization-statistics) shows approximately 70% of financial institutions identify legacy system integration as their primary technology challenge, driving SOAP to REST initiatives across banking.

---

## **Breaking Down the Numbers: Statistics on SOAP/REST API Adoption in 2026**

### **7\. 93% of organizations use REST APIs as their dominant architecture**

The [Postman State of the API Report](https://www.postman.com/state-of-api/2025/) confirms REST's overwhelming dominance, with 93% of organizations standardizing on REST—leaving SOAP increasingly marginalized.

### **8\. 85% of new APIs use REST architecture**

New API development has shifted decisively to REST, with [85% of new APIs](https://datamadeeazy.com/blog/rest-api-vs-soap-the-ultimate-2025-guide-for-developers-and-enterprises/) built using REST architecture rather than SOAP.

### **9\. 83% of public APIs use REST**

[Industry analysis](https://www.dreamfactory.com/hub/database-api-integration-statistics) shows 83% of public APIs now use REST—making SOAP services difficult to expose to partners and third parties.

### **10\. 70% of public APIs are REST-based**

[Zuplo research](https://zuplo.com/learning-center/soap-vs-rest-apis-ultimate-showdown) confirms that 70% of publicly accessible APIs use REST, establishing it as the de facto standard for external integrations.

### **11\. SOAP still powers 15% of APIs in banking, healthcare, and ERP**

Despite REST's dominance, [SOAP maintains presence](https://datamadeeazy.com/blog/rest-api-vs-soap-the-ultimate-2025-guide-for-developers-and-enterprises/) in regulated industries—15% of APIs in banking, healthcare, and ERP systems remain SOAP-based.

### **12\. SOAP handles $9 trillion per day in banking transactions**

Legacy SOAP services continue processing [$9 trillion daily](https://datamadeeazy.com/blog/rest-api-vs-soap-the-ultimate-2025-guide-for-developers-and-enterprises/) in banking transactions—demonstrating why careful, reliable migration tools are essential.

### **13\. 82% of organizations have adopted API-first approaches**

[API-first development](https://www.postman.com/state-of-api/2025/) has reached 82% adoption, creating pressure on organizations with SOAP-only services to modernize.

### **14\. 25% operate as fully API-first organizations**

[Full API-first adoption](https://www.postman.com/state-of-api/2025/) reached 25% in 2025—a 12% increase from 2024—accelerating the obsolescence of SOAP-only architectures.

---

## **From SOAP to JSON: Technical Approaches and Conversion Methodologies**

### **15\. Traditional SOAP to REST migration takes 6-18 months**

Manual conversion projects typically require [6-18 months](https://datamadeeazy.com/blog/rest-api-vs-soap-the-ultimate-2025-guide-for-developers-and-enterprises/) for full SOAP service decommissioning—a timeline that automated platforms dramatically compress.

### **16\. Mid-sized enterprise migration costs $25,000-$100,000**

[Migration cost estimates](https://datamadeeazy.com/blog/rest-api-vs-soap-the-ultimate-2025-guide-for-developers-and-enterprises/) for mid-sized enterprises range from $25,000 to $100,000 for manual SOAP to REST conversion projects.

### **17\. REST payloads are 30-70% smaller than SOAP**

XML-heavy SOAP messages create significant overhead—[REST payloads](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) are 30-70% smaller, reducing bandwidth consumption and improving performance.

### **18\. Organizations average 897 applications requiring integration**

[MuleSoft research](https://www.dreamfactory.com/hub/database-api-integration-statistics) shows enterprises average 897 applications—many still using SOAP—creating substantial modernization backlogs.

### **19\. Only 2% have integrated more than half their applications**

Despite integration priorities, [only 2%](https://www.dreamfactory.com/hub/database-api-integration-statistics) of organizations have connected more than half their application portfolio—highlighting the scale of remaining SOAP to REST work.

DreamFactory's [SOAP-to-REST conversion](https://www.dreamfactory.com/connectors/soap-to-rest) automates WSDL parsing, handles WS-Security authentication headers, and transforms complex SOAP types to JSON—reducing migration timelines from months to days.

---

## **Beyond the Basics: REST API Advantages Over SOAP in 2026 Enterprise Landscapes**

### **20\. REST APIs are 50-70% faster than SOAP**

[Performance benchmarks](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) consistently show REST APIs operating 50-70% faster than equivalent SOAP services across all use cases.

### **21\. Banking transactions: 60% faster with REST**

Financial transaction processing improves by [60%](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) after SOAP to REST migration—a critical performance gain for high-volume banking operations.

### **22\. Healthcare data retrieval: 70% faster with REST**

Patient data retrieval accelerates by [70%](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) after conversion—critical for healthcare applications requiring real-time access.

### **23\. Retail checkout: 60% faster with REST**

E-commerce checkout processing accelerates by [60%](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) after conversion, directly impacting customer experience and conversion rates.

### **24\. IoT sensor processing: 60% faster with REST**

IoT data processing improves by [60%](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases)—enabling the near-real-time responsiveness that IoT applications require.

### **25\. REST supports 2.5x more concurrent users**

Scalability testing shows REST architectures supporting [2.5x more concurrent users](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases)—10,000 with SOAP versus 25,000 with REST.

### **26\. REST handles 2.5x more requests per second**

Throughput improvements match concurrency gains, with REST handling [2,500 requests per second](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) compared to SOAP's 1,000.

---

## **Security and Compliance in API Modernization: Securing Your REST Endpoints**

### **27\. 99% of organizations experienced API security problems**

[Salt Security research](https://www.dreamfactory.com/hub/database-api-integration-statistics) reveals 99% of organizations encountered API security issues in the past year—making security-first migration approaches essential.

### **28\. API security incidents cost $591,404 on average**

The [Akamai 2024 API Security Impact Study](https://www.dreamfactory.com/hub/database-api-integration-statistics) found average incident costs of $591,404—justifying investment in secure migration platforms.

### **29\. Over 40,000 API security incidents in H1 2025**

[Thales/Imperva research](https://www.dreamfactory.com/hub/api-lifecycle-management-trends) documented over 40,000 API-related security incidents across 4,000+ environments in just the first half of 2025.

### **30\. Only 11% have extensive API security programs**

Despite widespread incidents, [only 11%](https://www.amraandelma.com/rest-api-marketing-statistics/) of organizations have implemented comprehensive API security programs—creating risk during migration projects.

### **31\. 66% delayed deployments due to API security concerns**

Security concerns caused [66% of organizations](https://www.dreamfactory.com/hub/database-api-integration-statistics) to delay API deployments—delays that built-in security controls can prevent.

DreamFactory's [enterprise security controls](https://www.dreamfactory.com/resources/whitepapers/security-guide) include granular role-based access control, OAuth 2.0, SAML, LDAP integration, and automatic SQL injection prevention—ensuring converted REST endpoints meet enterprise security requirements from day one.

---

## **DreamFactory's Role in Accelerating Enterprise SOAP to REST Transitions**

### **32\. 5 minutes to production-ready API**

DreamFactory generates [production-ready APIs in 5 minutes](https://www.dreamfactory.com/hub/database-api-integration-statistics)—compared to the 6-18 months typical of manual SOAP to REST migration projects.

### **33\. 50,000+ production instances processing 2+ billion daily API calls**

The platform's scale—[50,000+ deployments](https://www.dreamfactory.com/hub/database-api-integration-statistics) handling over 2 billion daily API calls—demonstrates enterprise-grade reliability for mission-critical conversions.

### **34\. $201,783 annual developer cost savings**

Organizations using DreamFactory report [$201,783 annual savings](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) in developer costs—resources redirected from manual API coding to higher-value work.

### **35\. $45,719 cost savings per API**

Automated generation delivers [$45,719 in savings](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) per API compared to manual development—compounding across enterprise portfolios.

### **36\. 99% fewer common vulnerabilities**

Platform-enforced security delivers [99% reduction](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) in common API vulnerabilities compared to manually coded endpoints.

Enterprises like [NIH](https://www.dreamfactory.com/case-studies/government-sql-server-bi-analyst-queries) and [Vermont DOT](https://www.dreamfactory.com/case-studies/government-mainframe-oracle-modernization) have used DreamFactory to modernize legacy systems—connecting 1970s-era infrastructure to modern applications without replacing core systems.

---

## **The Future is Now: AI/LLM Integration and the Data Access Layer in 2026**

### **37\. 89% of developers use generative AI daily**

[Developer AI adoption](https://www.postman.com/state-of-api/2025/) has reached 89%—creating demand for REST APIs that can serve as data access layers for AI applications.

### **38\. Significant growth in AI-related API traffic**

[Postman's 2025 report](https://www.postman.com/state-of-api/2025/) documents substantial increases in AI-related API traffic, with services like OpenAI, Gemini, and Llama showing multi-fold year-over-year growth—requiring modern REST architectures that SOAP services cannot efficiently provide.

### **39\. Only 24% design APIs with AI agents in mind**

Despite AI's growth, [only 24%](https://www.postman.com/state-of-api/2025/) of developers currently design APIs for AI agent consumption—an opportunity for organizations modernizing SOAP services.

### **40\. 75%+ of organizations using AI to support modernization**

[Konveyor research](https://www.dreamfactory.com/hub/legacy-system-modernization-statistics) shows over 75% of organizations now leverage AI to accelerate legacy modernization efforts, including SOAP to REST conversion.

DreamFactory's strategic positioning as an [AI/LLM data access layer](https://www.dreamfactory.com/ai) enables converted REST APIs to serve as secure foundations for AI applications—transforming legacy SOAP services into AI-ready data sources.

---

## **Measuring Success: Key Metrics for SOAP to REST Conversion Projects**

### **41\. Infrastructure savings: $120,000 annually**

Enterprises report [$120,000 annual savings](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) in infrastructure costs after completing SOAP to REST migrations.

### **42\. Development time reduced by 35%**

REST development requires [35% less time](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) than equivalent SOAP service development, improving project ROI.

### **43\. Maintenance costs reduced by 45%**

Ongoing maintenance drops [45%](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases) after conversion—compounding savings year over year.

### **44\. Bandwidth costs reduced by 50%**

Smaller REST payloads translate to [50% bandwidth savings](https://blog.dreamfactory.com/soap-to-rest-migration-5-enterprise-use-cases)—significant for high-volume transaction processing.

### **45\. 65% of organizations generate revenue from APIs**

[Postman reports](https://www.postman.com/state-of-api/2025/) 65% of organizations now generate revenue from their APIs—a monetization opportunity inaccessible to SOAP-only services.

---

## **Taking Action on These Statistics**

The data presents a clear mandate: SOAP to REST conversion has moved from optional modernization to competitive necessity. Organizations delaying migration face:

* Integration isolation as 93% of the market standardizes on REST
* Performance penalties of 50-70% slower response times
* Escalating maintenance costs consuming IT budgets
* Inability to leverage AI/LLM capabilities requiring REST endpoints
* Security vulnerabilities affecting 99% of API deployments

DreamFactory addresses these challenges through [automatic SOAP-to-REST conversion](https://www.dreamfactory.com/connectors/soap-to-rest) that eliminates manual rewriting. The platform parses WSDL files, handles WS-Security headers, transforms complex SOAP types to JSON, and generates complete REST endpoints with built-in security controls and live Swagger documentation.

For organizations ready to accelerate their SOAP to REST migration, [request a demo](https://www.dreamfactory.com/demo) to see how automated conversion transforms modernization timelines from months to minutes.

### Meet Terence

Terence is the CEO of DreamFactory Software. Previously, he was the Director of Operations at DreamFactory Software. Before joining DreamFactory, led operations at TeamPassword, was a member of Google RedTeam, and served as a U.S. Navy Officer during Operation Iraqi Freedom.

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## Frequently Asked Questions

### What are the primary drivers for the forecasted increase in SOAP to REST conversions by 2026?

Three factors dominate: First, REST's 93% adoption rate creates integration pressure on SOAP-only organizations. Second, performance requirements have intensified—REST APIs are 50-70% faster than SOAP equivalents, a gap that matters as real-time data becomes standard. Third, AI integration demands REST endpoints for data access—with 89% of developers using AI daily, organizations need modern APIs to participate in AI-driven workflows.

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### How does DreamFactory's platform accelerate the SOAP to REST conversion process for enterprises?

DreamFactory automates the conversion through WSDL parsing, WS-Security authentication support, and automatic JSON-to-SOAP/SOAP-to-JSON transformation. Traditional manual migrations require 6-18 months and $25,000-$100,000 for mid-sized enterprises. DreamFactory produces production-ready APIs in 5 minutes through configuration rather than code generation, with built-in security controls, automatic documentation, and role-based access control included.

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### What are the key security considerations when migrating from SOAP to REST APIs?

SOAP's WS-Security provides built-in encryption and authentication that must be replicated in REST implementations. With 99% of organizations experiencing API security issues and average incident costs of $591,404, secure migration is critical. DreamFactory addresses this through mandatory authentication (OAuth 2.0, SAML, LDAP, API keys), automatic SQL injection prevention, granular RBAC at field level, and comprehensive audit logging—delivering 99% fewer vulnerabilities than manually coded endpoints.

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### Can SOAP to REST conversion be achieved without extensive code rewriting?

Yes. Configuration-driven platforms like DreamFactory generate REST endpoints from SOAP service definitions without writing code. The platform automatically parses WSDL files, discovers SOAP functions, maps complex types, and produces complete REST APIs with documentation. This approach eliminates the manual coding that extends traditional migrations to 6-18 months and delivers $201,783 annual savings in developer costs.

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### What role will API platforms play in connecting legacy systems to emerging AI and LLM technologies?

REST APIs serve as the essential data access layer for AI applications—yet only 24% of developers currently design APIs for AI agent consumption. Organizations with SOAP-only services cannot efficiently provide the data access that AI/LLM systems require. DreamFactory's positioning as an AI data access layer enables enterprises to convert legacy SOAP services into REST endpoints that AI applications can consume, transforming technical debt into strategic assets as AI-related API traffic continues its substantial growth.

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