Jigsaw Sum Sudoku (Guest Authors Sudoku #3)

This Puzzle was created by Ritesh Gupta and Hitesh Gupta for Indian Sudoku Mock Tests. This is the new variation they created for this Sudoku Mock Test 6.
I am re-posting this Jigsaw Sum Sudoku as the 3rd Sudoku in Guest Authors' Sudoku Contribution. Can you solve this Jigsaw Sum Sudoku puzzle?

Rules of Jigsaw Sum Sudoku

Fill in the grid from 1 through 9 so that every row, every column, and every outlined region contains distinct digits. Each row is divided by zigzag vertical lines into 3 numbers. On the left side, outside the grid, there is the sum of 3 numbers in each line.

Jigsaw Sum Sudoku (Guest Authors Sudoku #3)

Previous Guest League Sudoku: Frame Sudoku (Guest Authors Sudoku #2)