Develop and Deploy your Apps

The primary objective of the Yahoo! Developer network is to promote a healthy developer ecosystem. It helps the developers launch their applications in the public eye. YDN help developers build applications and partner with them that help them take the app to a wider network of people.

YDN provides for partnership opportunities that help developers research and invest energy in building apps in the field of search content, social networking, mail and messengers amongst other things. YDN helps the developers who are building widgets for the web by helping them build services.

YAP

The Yahoo! Application Platform (YAP) promotes the developers to build Web Applications that are available throughout Yahoo! and present them to one of the largest audiences in the world-Yahoo! users.

The YAP primarily have the following components:

* Development environment: A browser-based tool that enables software developers to quickly create, preview, and publish Web applications.

* APIs and Web services: Programmatic access to OpenSocial functionality and popular Yahoo! Web services.

* Distribution and discovery infrastructure: Built-in features for publishing applications in Yahoo! galleries and properties, including homepage (www.yahoo.com), Yahoo! Toolbar, and My Yahoo!.

* Runtime and rendering environment: The backend servers and software that run applications and convert the code into HTML.

YQL

The Yahoo! Query Language is an SQL-like language that queries, filters, and joins data across different services. The language “exposes an SQL-like SELECT syntax that is both familiar to developers and expressive enough for getting the right data. Through the SHOW and DESC commands, we enable developers to discover the available data sources and structure without opening another Web browser.” YQL helps the developer design and implement the application through fewer lines of code hence reducing the “network footprint.”

YUI

The Yahoo! User Interface (YUI) discussion forum describes it as “a set of utilities and controls, written with JavaScript and CSS, for building richly interactive web applications using techniques such as DOM scripting, DHTML and AJAX. YUI is available under a BSD license and is free for all uses.” This more open source product is built by Yahoo! engineers contributors and is proven to be “scalable, fast, and robust.”

BOS

BOSS (Build your Own Search Service) is Yahoo!'s open search web services platform. “Developers, start-ups, and large Internet companies can use BOSS to build and launch web-scale search products that utilize the entire Yahoo! Search index.” It provides access to Yahoo!'s crawling and indexing, ranking and relevancy algorithms. The search can them be customized to be entirely private-not recording, analysing searching patterns-or it can send back relevant data back to Yahoo! all through a simple UI.