The World Health Organization (WHO) health resource and planning tool, formerly known as essential health technology package (EHTP), was described in-depth in the 2004 CE Handbook. Shortly after the earlier handbook was published, WHO renamed the tool as the integrated Health Technology Package (iHTP) to better reflect its scope and purpose, as well as implementation and use in countries by way of their Ministries of Health (MOH), development assistance agencies, and international organizations.