Business Component Factory - Herzum & Sims - published in 2000.

The "Business Components" of the title would today be called something like "autonomous service implementations". SOA today encompasses the idea of service implementations being as autonomous as possible so that they can be re-used in different service compositions.

Building Business Objects - Eeles & Sims - published in 1998.

The "Business Objects" of the title map to the "business components" discussed in the book "Business Component Factory".  This book includes (on a CD) a stand-alone version of the component middleware we developed in the mid- to late-90s. Sadly, I does not now seem to run correctly on XP or Vista systems.

Business Objects - Sims - published in 1994.

Although I called them "business objects", I was actually writing about what today are called "autonomous service implementations", with an emphasis on pluggability and the kind of architecture needed for multi-tier systems. While some of the terminology may be dated, I believe much of the content is as relevant today as it was back then, although many of the concepts have developed since then (see the other three books).

Download the 2.4MB PDF version, or browse some or all (depending on buffer space available!) of a 1.3MB Word-generated version).  In future, I hope to make these available in a more friendly form - the pdf split into easier chunks, and the html in many pages instead of one humongous one.