The significance of assessment as a learning component has led to the development of a sound assessment system that supports the teaching and learning objectives. Achievement of learning assessment should prioritize assessment "as" learning (AaL) and assessment "for" learning (AfL) rather than the assessment "of" learning (AoL). The appropriate AaL and AfL have influenced the process of AoL. Almost all teachers in Indonesia have faced the challenge of implementing Aal and AfL. This study used a qualitative study to report English as a Foreign Language (EFL) teachers' perceptions and challenges regarding technology-based AfL and AaL. The design of the study was content analysis using the coding procedure and the grounded theory framework as the analytical foundation. Data gathered involved conducting structured interviews with 60 EFL teachers from three central provinces within Indonesia. The findings revealed that EFL teachers in Indonesia had different perspectives about technology-based AfL and AaL as flourishing assessment approaches. Most of the EFL teachers' perceptions said that due to a lack of time, large classes, and lack of knowledge and training on technology-based AfL and AaL principles and practices in EFL contexts, implementation of technology-based AfL and AaL was viewed as challenging. The study has implications for EFL teachers and trainers in developing an instructional model of technology-based AfL and AaL.