This is where you describe your own target market - user type, demography, geography etc. How many users will you have during the first year, the second year etc?
You can also give a comment on the overall market - what are the trends? Show competence, knowledge and awareness. Also, add how your product/service fits into the current trends.
Here, it is very important that you show that you understand your market and your competition. Write the names of your competitors as it will make you sound more trustworthy.
Unique Differentiator from Competitors
What is your niche compared to your competitors? What makes your company different? The price, product features, consumer values?