"Much of modern application development depends on APIs. In the past we may have built massive monolithic applications, but modern cloud-native development depends on collections of microservices, linked by APIs that offer everything from remote procedure calls to database operations. This approach makes applications easier to run, allowing them to scale with user demand. It also makes them more reliable, handling failover in the event of data center outages."
"The answer is an API simulator, a generic tool that's part of your development tools, intercepting network calls, delivering expected responses, testing out your code's responses to various classes of error, and simulating the types of API management your code may need to work with. If there's a specification for an API, a simulator can implement it for you so you don't have to write mocks or spend development budge"
Modern cloud-native development depends on microservices linked by APIs that enable remote procedure calls and database operations. This architecture improves scalability and reliability but fragments services across teams and complicates test-driven development. Application components may be ready to test while dependent services remain unfinished, and third-party APIs can incur unacceptable costs during development. Building individual mocks can be as time-consuming as creating services, so a lightweight, easy-to-use tool is needed between client and server. An API simulator intercepts network calls, returns expected responses, exercises error handling, simulates API management, and can implement specifications to eliminate manual mock creation.
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