Edge Sums Sudoku (Daily Sudoku League #147)

For today, I was having two puzzles to choose from one of which I am posting now i.e. Edge Sums Sudoku and another is Product Arrow Sudoku. Earlier I wanted to post Product Arrow Sudoku but I was not having a solution ready for that puzzle. So I will post that puzzle later.
Edge Sums Sudoku appeared in the 10th World Sudoku Championship 2015. While creating this puzzle I learned few things e.g. in-out way to solving needs to be carefully used when there is a scattered area which is having the same number used more than once in scattered cells.
This Edge Sums Sudoku, I am posting in The League of Extraordinary Ladies & Gentlemen as 147th Sudoku in this series. Can you solve this Sudoku puzzle?
Rules of Edge Sums Sudoku
Place the digits from 1 to 7 in every row, column, bold outlined area, and twice in the grey cells. The clues outside the grid are the sum of the first two digits seen from that side.
Edge Sums Sudoku  (Daily Sudoku League #147)
Edge Sums Sudoku  (Daily Sudoku League #147)

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