Explanation of samples

International Securities Exchange (ISE):
DTI (Direct Trading Interface) Programming Manual is for developers to be able to exchange message formats with the ISE’s direct trading interface using XML-based messaging.

Thesys CAT:
User Defined Direct Query (UDDQ) Guide – This is the user guide that is used by anyone wanting to query the CAT. This contains both explanations of the front-end of the UDDQ as well as specific information with regards to financial instruments contained within the CAT.

Introduction to APIs:
A 101 course I have given to the various audiences throughout the years about what an API is. I customize it based on the audience. For example, if it’s for Sales it talks about the value proposition of why APIs are important. If it is for product, it is more use case-based. If it is for junior developers is is more about the internal workings of an API and how they differ from, for example, an SDK.

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