The most common and most likely answer to this crossword clue is the 8 letter word LEAD-INS
I've seen this crossword clue in Financial Times
L
E
A
D
-
I
N
S
Buddy explains!

The straight part
We know that "Intros" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case intros = lead-ins.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does LEAD-INS mean?
LEAD-INS noun- An introduction; something that leads into the beginning of something.
- A region of data at the beginning of a compact disc, holding the table of contents.
- A short phrase that begins the caption of a photograph.