This is the 8980th most frequent Korean word.
개발관련
"Development-related"
Here, '개발관련' is used as an adjective modifying '일' (work), indicating that the tasks are related to development.
저는 소프트웨어 개발관련 일을 하고 있습니다.
I am working on software development-related tasks.
In this sentence, '개발관련' describes '주제' (topic), signifying that the subjects of discussion pertain to development.
그는 개발관련 주제를 토론하는 것을 좋아합니다.
He enjoys discussing topics related to development.
Here, '개발관련' qualifies '자료' (materials), implying that the materials are associated with development.