That kind of; like that (referring back to something previously mentioned). A commonly used demonstrative expression.
ああいった人とはあまり付き合わないほうがいい。
It's better not to associate much with people like that.
ああいった店は観光客向けに値段が高めだ。
Shops like that tend to be pricier and cater to tourists.
彼の説明を聞いて、ああいったやり方が一番効率的だと思った。
After hearing his explanation, I thought that approach would be the most efficient.