Traditional learning spaces have evolved into dynamic blended tertiary environments (BTEs), providing a modern means through which tertiary education institutes (TEIs) can augment delivery to meet stakeholder needs. Despite the significant demand for web-enabled learning, there are obstacles concerning the use of EOTs, which challenge the continued success of blended implementations in higher education. As technology usage accelerates, it is important for TEIs to understand and address the current challenges faced by key stakeholders using EOTs in BTEs, and provide appropriate support. This paper identifies and discusses the challenges stakeholders experience in using EOTs in BTEs. Interviews with 13 blended learning experts from New Zealand, Australia and Canada identified the challenges in using EOTs, and the extent to which these prevent widespread adoption and effective use of EOTs in BTEs. The outcomes of this study will enable them to design relevant approaches to tackle current obstacles in EOT usage, and deliver meaningful support to key stakeholders in BTEs.