The logo consists of two parts : blue and green.
And the empty space between these two colors are rotated stylized letter Z (You can see more clearly explanation at my Google Photo: http://tinyurl.com/zapordering) .
Besides, these two parts are like brackets commonly used in programming , this says you are a company in the field of software engineering .
Two brackets , as well as two arrows are pointing out , express your company will not stop growing.