I have heard plenty about the Muslim conquest of Spain, their expansion throughout northern Africa, etc. but little of their spread Eastward. The Battle of Talas, as far as I know, aided in allowing Islam to become dominant over Buddhism throughout central Asia, but was there a formal expansion/empire present in this region as there was in Spain?

In addition to Central Asia, what about the spread of Islam into Russia, India, China, Southeast Asia, Indonesia, and the Phillipines? Was this more a result of trade/missionaries, or were there Muslim conquests and Islamic empires in these regions of the world?

Sorry if this is a very broad question.