Tuscany SCA in Action book is written by the following authors who are Project Management Committee (PMC) members and committers for Apache Tuscany.

Simon Laws is a senior developer from IBM focused on Open Source SOA. 

Mark Combellack
was co-chair of the SCA-J OASIS technical committee for two years.

Raymond Feng is a pioneer for SCA technology and has been developing SCA for commercial products and in open source. 

Haleh Mahbod is an independent consultant experienced in data and process integration.

Simon Nash 
is an Apache Tuscany PMC member and committer. He has made significant contributions to the OASIS specifications for the SCA 1.1 standard. He has been at the forefront of a number of software innovations with particular interests in programming languages, communications technologies, parallel processing, and simplifying software development.