This conference (also known as the Fourth Moscow Conference) was held in 1944 and was similar in its subject matter to the more famous Yalta Conference a few months later. Than main difference was that President Roosevelt represented the US at Yalta but was not present at Moscow.
At the Moscow Conference, the only issue of major significance to WWII itself was the issue of the USSR entering the war against Japan. The Soviets agreed to do so three months after Germany had been defeated.
The more important outcome of the conference was a tentative agreement on what to do about Eastern Europe. The leaders at the conference agreed on which countries would be put under Soviet influence and which would be under British influence. This arrangement was later altered, but the basics of the agreement were reached at the Moscow Conference.
Overall, then, this conference was like a precursor to the later Yalta Conference and the agreements reached in Moscow were similar to those at Yalta.