animation studio; animation production company
Refers to a company that produces animated works, typically for TV, film, or online distribution.
That animation studio produces popular works every year.
He is in charge of key animation at an animation production company.
A general production company; アニメ制作会社 specifies animation production.
Often used interchangeably, but アニメスタジオ may emphasize the physical studio or creative team, while アニメ制作会社 is more formal and business-oriented.
Compound of アニメ (animation) + 制作 (production) + 会社 (company). A straightforward modern term.