Enterprise Services Architecture outlines a disciplined and structured approach to understanding how today's enterprise applications will make use of web services. Aimed at senior management and IT professionals, the book presents a forward-looking architecture that can meet future development challenges with ease and agility. This book was commissioned by SAP, but we're making it available to the general public because we believe the information can help the marketplace come to grips with the architectural revolution that is underway. Sample Chapter 1, Concepts and Philosophy, is available online.

Walking Through an RSS 1.0 Document -- RSS (Rich Site Summary) is a method of describing web content that is available for syndication. Find out what an actual RSS document looks like in Chapter 6 of Content Syndication with RSS. And get a free trial to read this and four other O'Reilly books on Safari.

Gastronomy for Geeks -- Pizza, Twinkies, and Jolt are geek haute cuisine for a stereotypical few. Many of you know the difference between au jus and baba ghanoush, and that Thai shish kabob isn't called sauté. So, you Geek Gourmets, come share your favorite recipes, and see what your peers are cooking.

The Software Paradigm Shift -- Tim O'Reilly says the operating system no longer matters. Applications now live above the level of a single device or OS. "We're at the end of the personal-computing era. We're at the beginning of something profoundly different." Listen in on this IT Conversations interview, and find other interviews with Tim at tim.oreilly.com.

A PHP Web Services Client -- Web services promise to make your life easier as more companies are beginning to allow access to their data through Web services APIs. Learn how to write a PHP application to Amazon's Web services API from Adam Trachtenberg, coauthor of PHP Cookbook.

Introduction to Web Services -- Web services are all about enabling computers to communicate with each other, opening up services and data. Built on open standards, Web services offer convenient ways to open up the functionality of your applications to other applications. Chapter 1 of Programming Web Services with Perl provides a thorough introduction--read it before you start programming Web services. Get a free trial to read this and four other O'Reilly books on Safari.

Amazon Hacks is a collection of real-world tips, tricks, and full-scale solutions to practical uses of Amazon.com and the Amazon Web Services API. If you have an Amazon hack you'd like to contribute, visit hacks.oreilly.com.

Sift, Stir, Code: O'Reilly Cookbooks -- Looking for the right ingredients to solve a programming problem? Look no further than O'Reilly Cookbooks. Each cookbook contains hundreds of programming recipes presented in a special Problem/Solution/Discussion format, and includes hundreds of scripts, programs, and command sequences you can use to solve specific dilemmas. Get your daily recipes and view our complete list of Programming Cookbooks for Geeks.

Five Tips for .NET Programming in Perl -- Don't get tripped up making your Perl SOAP applications work with .NET services. Here are some of the most common traps for Perl developers, enumerated by Randy J. Ray, coauthor of Programming Web Services with Perl.