Fetching details from the dictionary...
besides; furthermore; moreover
彼は才能があり、かつまた努力家でもある。
He is talented, and moreover a hard worker.
かつまた、努力も必要だ。
Furthermore, effort is also needed.
この店は安い、かつまた美味しいと評判だ。
This shop has a reputation for being cheap and moreover delicious.