The Moon in the 10th house places your inner weather, what you need to feel safe and how you react before you think, right at the top of the chart where the world can see it. The 10th house is your career, your public standing, and what you are known for. Having the Moon here means your emotional state is part of your public face, whether you plan that or not. That is the plain fact of it, and everything else follows from there.
The 10th house is angular, one of the four houses that begin at the chart's angles. Planets in angular houses act visibly, with force that shows in the world rather than staying inside. The Moon here is out in the open, affecting how colleagues, employers and the public read you on any given day.
Because the 10th house is Capricorn's natural house, it carries Saturn's weight: seriousness, structure, long-term reputation. The Moon sitting in that Saturn-linked territory creates a real tension. The Moon shifts every two and a half days. Saturn wants to build something that lasts. Living with that tension is much of what Moon in the 10th house is about.