House was appraised for 170k more than asking price from seller

Hello. Wife and I are buying our first home in hcol area. We are about 2 weeks from the closing date and have gone through inspections and everything and our lender just did their appraisal and told us they appraised it for 900k (we are paying 730k). I'm just having a hard time wrapping my head around any implications of this. From what i've read, it doesn't mean the house is actually worth 900k, it doesn't mean our property taxes go up, and it doesn't mean the house would have sold for 900k. I just don't really get what this means at all. Are there any implications of this at all?