API Discovery and Inventory - Market Share Analysis, Industry Trends & Statistics, Growth Forecasts (2026-2031)

The API discovery and inventory market size is expected to increase from USD 1.56 billion in 2025 to USD 1.9 billion in 2026 and reach USD 4.37 billion by 2031, growing at a CAGR of 19.13% over 2026-2031. This report is segmented by Component (Software and Services), Deployment (Cloud, On-Premises, and Hybrid), Organization Size (Large Enterprises and Small and Medium-Sized Enterprises), API Type (REST APIs, Graphql APIs, and More), Industry Vertical (Government and Public Administration, Industrial Manufacturing, and More), and Geography. The Market Forecasts are Provided in Terms of Value (USD).

Global API Discovery and Inventory Market Trends and Insights

API Sprawl from Cloud-Native and Microservices Architectures

Cloud-native development reduces the time between API creation and the point at which an endpoint requires governance. Microservice-based applications can add many endpoints during a deployment cycle, which makes periodic inventory updates less reliable. Salt Security reported in April 2026 that 66% of organizations saw API counts rise by more than 50% in 1 year. This pace can exceed the capacity of manual review and registration processes. The API discovery and inventory market benefits when organizations need continuous coverage to apply access policies, rate limits, and lifecycle controls. Automated discovery becomes more important when development teams release services frequently across cloud environments.

Rising Shadow API and Zombie API Exposure

Shadow and zombie APIs extend the need for discovery beyond development teams and into security operations. Salt Security reported in 2025 that 76% of organizations had shadow APIs and 43% had active zombie APIs. Shadow APIs operate without formal documentation, while zombie APIs remain exposed after their intended use has ended. Akamai reported that the share of respondents who knew which inventory APIs returned sensitive data declined from 40% in 2022 to 23% in 2026. Static, gateway-only inventories can miss endpoints that operate outside visible traffic paths. The API discovery and inventory market, therefore, favors platforms that use observed runtime traffic to identify undocumented services and support remediation.

Hyperscaler Bundling and Open-Source Substitution

Cloud providers increasingly include catalog, discovery, and governance features in API gateway services. This bundling creates an alternative for buyers that primarily operate within 1 cloud environment. Open-source options such as Kong Community Edition, Gravitee, and Tyk can also appeal to budget-sensitive SMEs that prioritize vendor independence. These options can constrain standalone vendors where requirements are limited to basic catalog functions. Buyers may compare native features with the cost and effort of adding a dedicated platform. The API discovery and inventory market remains more favorable for providers that address multi-cloud estates or strict on-premises requirements that bundled tools may not cover fully.

Other drivers and restraints analyzed in the detailed report include:

• AI-Generated and Agent-Consumed API Proliferation
• Regulatory and Audit Demand for API Asset Accountability
• Integration Complexity Across Gateways, Meshes, and Runtime Telemetry

Segment Analysis

Software accounted for 70.31% of the API discovery and inventory market size in 2025. Catalog platforms, gateway-integrated modules, posture management dashboards, and classification capabilities form the software base for API governance. Many buyers need visibility into existing endpoints before adding managed or advisory services. Services are projected to grow at a 21.62% CAGR through 2031. Implementation consulting, managed discovery, and integration work address undocumented endpoints that software cannot resolve on its own.

Organizations operating across cloud and on-premises environments need help reconciling gateway metadata into 1 governed catalog. Postman introduced an AI-native API platform with an API Catalog in March 2026. The company described the catalog as a unified system of record for APIs and services across more than 40 million developers and 500,000 organizations. Embedded catalog capabilities can reduce the need for discovery-only services in simpler environments. They can still leave demand for lifecycle integration, remediation, and multi-environment governance.

Cloud held 68.55% of the API discovery and inventory market share in 2025. SaaS-delivered discovery reduces infrastructure management work and aligns with API estates built in public clouds. Cloud platforms expose API metadata through consoles and observability interfaces, which can help tools establish an initial inventory. Hybrid deployment is projected to expand at a 21.06% CAGR through 2031. Data residency requirements in financial services, healthcare, and government support this demand because traffic metadata may need to remain within an organization’s perimeter.

On-premises deployment remains relevant for air-gapped and heavily regulated environments. Defense, critical infrastructure, and banking organizations may restrict the movement of API metadata through public networks. WSO2 released its API Platform in March 2026 with self-managed, SaaS, and hybrid options under a unified control plane. The platform supports federation across Kong, AWS API Gateway, and Azure API Management. Vendors that cannot operate across cloud, hybrid, and on-premises models can face weaker positions in regulated procurement.

Complete Report Scope:

• By Component
  • Software
  • Services
• By Deployment
  • Cloud
  • On-Premises
  • Hybrid
• By Organization Size
  • Large Enterprises
  • Small and Medium-Sized Enterprises
• By API Type
  • REST APIs
  • GraphQL APIs
  • SOAP APIs
  • gRPC and Other RPC APIs
  • Event-Driven and Asynchronous APIs
• By Industry Vertical
  • Government and Public Administration
  • Industrial Manufacturing
  • Retail and E-Commerce
  • Transportation and Logistics
  • Energy and Utilities
  • Oil and Gas
  • IT and Telecommunication
  • Media and Entertainment
  • Education and Research Institutions
  • Healthcare and Life Sciences
  • Banking, Financial Services, and Insurance (BFSI)
  • Other Industry Verticals
• By Geography
  • North America
    • United States
    • Canada
    • Mexico
  • South America
    • Brazil
    • Argentina
    • Rest of South America
  • Europe
    • Germany
    • United Kingdom
    • France
    • Italy
    • BENELUX
    • Rest of Europe
  • Asia-Pacific
    • China
    • Japan
    • India
    • South Korea
    • Australia
    • Rest of Asia-Pacific
  • Middle East and Africa
    • Middle East
      • United Arab Emirates
      • Saudi Arabia
      • Rest of Middle East
    • Africa
      • South Africa
      • Nigeria
      • Egypt
      • Rest of Africa

Geography Analysis

North America held 38.19% of the API discovery and inventory market share in 2025. The region has a dense concentration of cloud infrastructure, experienced DevOps talent, and enterprise buyers that place API governance within security and technology functions. The United States supports this position through its cloud-native software companies, API vendors, and major financial institutions. Canada adds demand through its federal Directive on Service and Digital.

Europe has a distinct demand profile because compliance is often the key procurement factor. The European Banking Authority maintains technical standards for open banking API estates. Germany, the United Kingdom, France, Italy, and the BENELUX countries account for much of the region’s enterprise demand. Other European markets are adding demand as digitization programs increase API use. The EU AI Act’s general application date of August 2, 2026, adds recordkeeping needs for high-risk AI systems.

Asia-Pacific is projected to expand at a 20.37% CAGR through 2031. National data accountability and data localization requirements support API-level governance across major regional economies. India’s digital public infrastructure, South Korea’s fintech activity, and Australia’s privacy reform broaden the regional opportunity. Microsoft announced a USD 2.9 billion investment in Japan in 2024 to expand cloud and AI infrastructure. The Middle East, Africa, and South America remain earlier-stage areas, with demand concentrated in financial services and government. Brazil is a notable South American market because PIX and Open Finance have supported API investment at leading banks.

List of Companies Covered in this Report:

• Postman, Inc.
• Google LLC
• Microsoft Corporation
• Amazon Web Services, Inc.
• Salesforce, Inc.
• IBM Corporation
• Kong Inc.
• SmartBear Software, Inc.
• WSO2 LLC
• Axway Software SA
• Tyk Technologies Ltd.
• RapidAPI, Inc.
• Stoplight, Inc.
• Broadcom Inc.
• Red Hat, Inc.
• Oracle Corporation
• SAP SE
• Akamai Technologies, Inc.
• Salt Security Ltd.
• 42Crunch Limited
• Gravitee.io Limited
• Boomi, LP
• Sensedia Tecnologia S.A.
• Traceable, Inc.
• Wallarm, Inc.

Additional Benefits:

• The market estimate (ME) sheet in Excel format
• 3 months of analyst support