Skip to content

Fastly vs FlagSmith

Based on 383 and 1 real audits

View Fastly details | View FlagSmith details
MetricFastlyFlagSmithWinner
Performance4533Fastly
Accessibility91100FlagSmith
Best Practices8996FlagSmith
SEO92100FlagSmith
Security6659Fastly
TTFB149ms192msFastly
Composite7472Fastly
Performance
Fastly
45
FlagSmith
33
Accessibility
Fastly
91
FlagSmith
100
Security
Fastly
66
FlagSmith
59
SEO
Fastly
92
FlagSmith
100
Composite
Fastly
74
FlagSmith
72

Fastly outperforms FlagSmith in 4 of 7 categories, with a stronger composite score (74 vs 72). FlagSmith leads in accessibility, best practices, SEO.

When to choose Fastly

Choose Fastly when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose FlagSmith

Choose FlagSmith when your primary concern is accessibility and SEO. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 383 audited Fastly sites and 1 audited FlagSmith sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →

Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.

FAQ

Which is faster, Fastly or FlagSmith?
Based on real BeaverCheck audits, Fastly sites score higher on Lighthouse performance (45 vs 33 on average).
Which has better security, Fastly or FlagSmith?
Fastly sites score higher on security analysis (66 vs 59 on average).
Which has better accessibility, Fastly or FlagSmith?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor FlagSmith (100 vs 91). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, Fastly or FlagSmith?
FlagSmith sites score higher on Lighthouse SEO signals (100 vs 92 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), Fastly or FlagSmith?
Fastly sites show lower Time to First Byte (149 ms vs 192 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose Fastly or FlagSmith for my website?
Both platforms have trade-offs. Fastly scores higher on overall composite score while Fastly may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
Audit your own site

Send Feedback