It is the near-universal position of scholarship that the Gospel of Matthew is dependent upon the Gospel of Mark.
This position is accepted whether one subscribes to the dominant Two-Source Hypothesis or instead prefers the Farrer-Goulder hypothesis.
Unlike the canonical Gospels, it is not a narrative account of the life of Jesus; instead, it consists of logia (sayings) attributed to Jesus, sometimes stand-alone, sometimes embedded in short dialogues or parables.
The text contains a possible allusion to the death of Jesus in logion 65 (Parable of the Wicked Tenants, paralleled in the Synoptic Gospels), but doesn't mention his crucifixion, his resurrection, or the final judgment; nor does it mention a messianic understanding of Jesus.
Preservation of sayings, such as 23:2-3, which support the continued authority of Pharisaic teaching, and above all the special emphasis placed on the requirement not to offend those who still think in legalistic terms (see the discussion of -27), shows that dialogue with the Jewish Synagogue had not broken off.