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Application Performance

Connect, protect, perform — without compromise.

Speed isn't a feature — it's revenue, conversion, SEO, and retention. Every layer of the Cloudflare edge exists to shave milliseconds off every request, for every user, everywhere.

~50 ms
Cloudflare reach to 95% of the Internet-connected world
~30%
avg TTFB reduction with Argo Smart Routing
+2%
conversion uplift per 1s page-load improvement (Walmart)
explore the layers
Layer 01 · Accelerate internet applications

Cached at the edge. Smart-routed when not.

Most requests should never reach your origin — and when they have to, they should take the fastest possible path. Cloudflare's CDN, Argo Smart Routing, and 1.1.1.1 DNS work together so every byte arrives faster than the public internet alone could deliver it.

Edge cache hit · vs · origin round-trip illustrative · loops continuously
Cache HIT
~20 ms
Origin MISS
~300 ms
Cloudflare CDN

Static & dynamic, cached globally

330+ cities. Tiered Cache turns most misses into near-hits by checking regional and upper-tier caches before touching origin. Cache Rules give per-route control over what's cached, for how long, and under which conditions.

Argo Smart Routing

Lowest-latency path, in real time

The public internet routes packets along the cheapest path — not the fastest. Argo moves your traffic onto Cloudflare's private backbone, choosing the optimal route from live network telemetry. ~30% average TTFB reduction. One toggle, zero code changes.

Cloudflare DNS

Authoritative DNS · 1.1.1.1 resolver

The fastest authoritative DNS on the internet according to DNSPerf. Sub-10ms resolution from anywhere on the planet. DNSSEC-signed, DDoS-protected, and the foundation every other layer is built on — because nothing's fast if name resolution isn't.

~95%
of requests answered at the edge on typical sites — origin never sees them
~30%
average TTFB reduction with Argo on cache misses
<10 ms
global DNS resolution from 1.1.1.1 — fastest authoritative DNS measured
0
code changes required — every layer is a toggle, not a rewrite
Layer 02 · Ensure app availability

Origin down? Traffic finds a healthy one.

Hardware fails. Regions go dark. Cloud providers have bad days. Cloudflare Load Balancing health-checks your origins continuously and auto-routes around the broken ones — across data centers, clouds, or continents. Your users never see the outage.

Health-checked origins · automatic failover illustrative · loops continuously
Healthy origin — receiving traffic Failed health check — automatically bypassed
Load Balancing

Spread traffic across origins, anywhere

Pool origins across regions, clouds, or on-prem. Cloudflare picks the right one for each request based on weight, live health, and steering policy — random, dynamic, geo, proximity, or least-outstanding-requests. Optional session affinity for stateful apps.

Health Checks

Continuous probes from the edge

Active checks from every Cloudflare region — HTTP, HTTPS, TCP, and ICMP ping. Configurable intervals, retry logic, expected response codes. The moment an origin fails, it stops getting traffic within seconds.

Geo Steering

Route by where the user is

Send EU users to EU origins, US users to US origins — for latency, data residency, or compliance. When a region's origin fails, fall back to the next-closest healthy pool automatically.

Seconds
to detect failure and route around it — no manual intervention
100%
uptime SLA — financially-backed for Enterprise customers
Multi-cloud
AWS, GCP, Azure, on-prem — one load balancer, every origin
Zero
user-facing downtime during failover — the broken origin is silently skipped
Layer 03 · Optimize web experience

Make every byte work harder.

The fastest byte is the one you don't send. Cloudflare transforms images at the edge, lazy-loads on slow networks, and resizes on demand — so your origin keeps doing what it does best, and your visitors download a fraction of what they used to.

Polish

Smaller images, automatically

Lossless or lossy recompression at the edge. WebP and AVIF for browsers that support them. Origin keeps the original; the edge ships the smallest viable copy.

before
1.2 MB
after
~420 KB
Mirage

Faster pages on slow networks

Detects mobile and slow connections, serves lightweight image placeholders, then upgrades them in place. Pages feel responsive even on patchy 3G.

Image Transformations

One source, every device

Resize, crop, and reformat on the fly via URL. Stop pre-generating ten variants per upload. Stop shipping desktop-sized images to phones.

~40%
image bandwidth savings typical with Polish on
Zero
build-pipeline changes — origin stays untouched
AVIF + WebP
automatic modern formats, transparent fallback
variants from one source — no storage explosion
The bottom line

Speed is a business metric.

Every layer of the Cloudflare edge — cache, network, assets — exists for one reason: less waiting, more revenue. You don't have to choose which one. They all ship together.

+1%
revenue per 100ms shaved off load time
−7%
conversion for every 1s of delay
53%
of mobile users abandon after 3s
↑ SEO
Core Web Vitals reward fast pages