The SUMIFS function first appeared in Excel 2007. The previous version, Excel 2003, did not have it.
SUMIFS was new in Excel 2007.
Prior to Excel 2007, the maximum was 7. From Excel 2007, the limit has been raised to 64. However, it becomes very impractical using too many nested IFs, so it is better to look for other ways where it is possible, like breaking down your formulas or using a lookup function, like VLOOKUP.
ranges evaluated
The plural of if is ifs. As in "no ifs and no buts".
IFS mean
IFS AB was created in 1983.
IFS AB's population is 2,009.
IFS AB's population is 2,700.
The population of Les Ifs is 49.
ifs code on a cheque
There are an infinite number of what-ifs in the world and the universe also.
Tourville-les-Ifs's population is 549.