IBM API Management Service delivers these key capabilities:

• Application programming interface (API) developer can create, secure, control, deploy, analyze, and manage Simple Object Access Protocol (SOAP) and Representational State Transfer (REST) APIs and services for internal or external consumption quickly through a single console.
• API business owner can advertise, market, socialize, and sell APIs as a product in developer communities (private, partner, and public) worldwide.
• Application developers can easily find, understand, and have tools to help them consume the API, and are able to manage their application and understand its consumption.

API Management is a complete solution that helps you:

• Quickly configure your API management solution and rapidly create new APIs from existing business assets or cloud services through configuration and a no-coding approach.
• Manage your APIs with business-level controls by setting varying levels of consumption entitlements and the ability to manage the application developer.
• Transform and grow your business with insights through detailed analytics with structured filtered searches and navigation capabilities.
• Acquire partners and innovative application developers, both internally and externally, through an attractive developer portal that can be tailored to your brand.
• Use industry standards to help secure, control, and optimize access to your APIs.
• Reduce resolution time with supplied operational monitoring and debugging capabilities.

Find out more here.