v3.25.2
Cover Page
Nov. 06, 2023
Cover [Abstract]  
Document Type 8-K
Document Period End Date Jun. 13, 2025
Entity Registrant Name FASTLY, INC.
Entity Central Index Key 0001517413
Amendment Flag false
Entity Incorporation, State or Country Code DE
Entity File Number 001-38897
Entity Tax Identification Number 27-5411834
Entity Address, Address Line One 475 Brannan Street, Suite 300
Entity Address, City or Town San Francisco
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94107
City Area Code 844
Local Phone Number 432-7859
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Class A Common Stock, $0.00002 par value
Trading Symbol “FSLY”
Security Exchange Name NYSE
Entity Emerging Growth Company false