This IDC study provides a detailed description of IDC's business outsourcing services taxonomy, including:

This taxonomy is used by IDC analysts to help our clients understand the changing BPO industry dynamics, from the perspective of both market resource requirements and external demand. Readers should use this study to understand the underlying structure behind IDC's BPO services research. "IDC's BPO taxonomy represents comprehensive definitions of the terminologies that cover both horizontal and vertical functions across Asia/Pacific (excluding Japan) or APEJ," says Conrad Chang, research manager, BPO Services, IDC Asia/Pacific.