This is the 186th most frequent Japanese word.
作っ
The word "作っ" is the stem form of the verb "作る" (tsukuru), meaning "to make" or "to create."
The word '作った' functions as the past tense of the verb 作る, meaning 'to make' or 'to create', and it signifies an action of creating or making something tangible, like a cake, in a completed state.
彼女は今日、美味しいケーキを作った。
She made a delicious cake today.
The word '作る' here represents the action of designing or constructing something significant or conceptual, like a system. It is in its dictionary form, implying a general statement.
新しいシステムを作るのは時間がかかります。
Creating a new system takes time.
'作っています' is the present continuous form of 作る, used to indicate an action currently taking place where the subject is actively engaged in planning or designing something.