How to counter Ambessa
Let us take a look on how to beat Ambessa. We will look at champions who are strong against Ambessa and who are weak against Ambessa. Use win rate, gold difference and creep score difference at minute 10 to find the best 
Top champion who counters Ambessa. You can already win in champion select with the right counters for Ambessa. If you want to know how to counter Ambessa then you need to take into account the best picks vs Ambessa and the worst picks vs Ambessa. This Ambessa counter data is based on matches played by Pros on patch 15.12 and previous ones. It is important to see whether Pros counter picked Ambessa or whether they played as Ambessa.
Champions used by Pros to counter pick Ambessa
Looking at the matches from Pros (see table Pros counter picked Ambessa) we can see that they picked 
Jayce most often to counter pick Ambessa. The matchup Jayce vs Ambessa occured 97 times. Ambessa has 58 wins and 39 losses in this matchup. Learn how to counter pick Jayce to get another perspective on the data.
Lane outcome for Ambessa
When looking at Ambessa counters you will notice that win rates alone are not conclusional. Therefore we provide an overview (see table Lane Outcome) where you can see the lane outcome of Pros who played Ambessa. The lane outcome of Ambessa consists of three outcomes: Win, Loss or Draw. Let's take a look of Ambessa lane and match outcome for specific matchups. Considering the lane outcome and the match outcome of a specific matchup, might enable you to find the right counter for Ambessa.
Conclusion
Analyze the available data and learn how to beat Ambessa. To master Ambessa take also a look on Ambessa builds and runes for Ambessa. Good luck, Summoner!