In my capacity as an editor at InfoQ I recently had the opportunity and privilege to edit the November eMag on API Technologies. If you haven't had a look at it yet, then feel free to download and take it with you.
The great thing about this task was that I got to read and review a lot of interesting content on APIs. The down-side was that only a small fraction of that could fit into the eMag. In the end we selected seven articles that I think captured a broad and comprehensive range of topics across APIs from the business end, through API design, architecture, tools and security.
As an aside or a footnote, I wanted to publish here a list of other articles, news items and conference presentations that I enjoyed while researching the eMag. I've broadly categorised them into the following subject areas.
The Business of APIs
- The History of APIs
- API Conf Panel: Marketing and Promoting APIs
- 3 Things You Need to Turn Your Enterprise Into A Platform
- Web API Design Book – Crafting Interfaces that Developers Love
- Designing and Implementing Hypermedia APIs (Part 1)
- Designing and Implementing Hypermedia APIs (Part 2)
- Stefan Tilkov on REST and Hypermedia, ROCA, WebSockets vs. HTTP
- Generic Hypermedia and Domain-Specific APIs: RESTing in the ALPS
- API Conf Panel: API Design Best Practices
- Analysis of Web API Versioning Options
- API Versioning
- The Good, the Bad, and the Ugly of REST APIs
- APIs Can Be a Pain
Architecture & Scalability
- Functional Reactive Programming in the Netflix API
- Netflix: Dystopia as a Service
- API Conf Panel: API Lifecycle, Methodology and Architecture
- The Structure of API Revolutions
- Has Web Style Worked?
- Introducing the BBC's Linked Data Platform and APIs
- API Conf Keynote: Jeff Meisel, National Instruments
Tools & Integration
- API Conf Panel: Emerging Automation Layers on Top of Today’s APIs
- Adding Flexibility to your REST Implementation with Yoga
- API Management Platforms Capabilities
This list is by no means exhaustive and there is new material being added all the time, but I think if you browsed through even half of this material you'd have a good overview of the state of the API art.