Part of the new extension 3.0. NET in order. NET 2.0, WCF provides a unified platform for building and running connected systems and will be used by almost every NET or. SQL Server developers Intended for experienced developers who want to build a service-oriented and transactional applications on Microsoft platform that offer reliable and secure transactional message address WCF as well as next generation technology to configure and use network-distributed topics covered include key service binding, contracts, client , service, security, deployment, management, and hosting