A SUMIFS formula becomes easier to maintain when thresholds and labels live in cells instead of being hard-coded inside the formula.
Separate logic from configuration
If a report uses a minimum date, region and status, put those criteria in a small control area. The formula then points to cells rather than embedding values that must be edited in multiple places.
Use real dates
Store start and end dates as spreadsheet dates. Concatenate comparison operators such as ">="&J2 when the criterion comes from a cell.
Keep ranges aligned
Every criteria range should cover the same rows as the sum range. Misaligned full-column and partial-column ranges are a common source of confusion.