CDN & Edge Delivery

A delivery layer engineered for the reality of modern OTT: multiple CDNs running in parallel, SSAI stitched at the edge, and intelligent routing that keeps streams alive even when an entire region of a major CDN goes dark.

99.99%

Delivery availability across blended CDN portfolio

< 3 s

Origin failover time without player reconnect

< 11 s

Multi-CDN rebalance during measured degradation

Commercial and regional CDNs orchestrated in parallel

Delivery, Routed Intelligently

Vucos CDN & Edge Delivery is a multi-CDN control plane combined with programmable edge workers. It packages content as HLS and DASH, signs playback tokens, stitches ads server-side, and routes every viewer to the best-performing edge at that moment — measured in real time against latency, rebuffer rate, and throughput. When a CDN degrades, traffic shifts within seconds; when origin storage has an incident, the secondary takes over without the player reconnecting.

Why this matters

Viewers leave when the stream stalls. Industry data shows that a 2-second startup delay drops completion rate by roughly 6%, and a single rebuffer event during a live match costs measurable churn. Operators that rely on a single CDN or a single origin are exposed every time that vendor has a capacity incident, a peering dispute, or a regional outage — and those incidents happen more often than most internal SLA dashboards admit.

Vucos runs delivery as a portfolio. Multiple commercial CDNs and regional edge operators are orchestrated behind a unified control plane that measures every viewer session, routes based on real performance, and fails over automatically. The result is measured in minutes of restored watch time during the worst 1% of events — the ones that otherwise become next-morning board escalations.

What the edge does

Multi-CDN orchestration

Simultaneous delivery across Akamai, Cloudflare, Fastly, AWS CloudFront, and regional CDNs. Real-time performance measurement picks the best edge per session, per region.

Server-side ad insertion

SSAI stitching at the edge with SCTE-35 marker processing, personalized ad decisioning, and seamless manifest manipulation — no client-side ad blockers can strip it.

HLS & DASH packaging

Just-in-time packaging for HLS (CMAF, TS), MPEG-DASH, Low-Latency HLS, and CMAF chunked transfer. One mezzanine, every protocol and DRM variant.

Programmable edge logic

Edge workers handle token validation, geo-blocking, A/B testing, URL rewriting, and device-specific manifest shaping — with sub-millisecond cold starts on every request.

Origin failover

Active-active origin storage across regions with automatic failover. If primary origin degrades, secondary serves within 3 seconds without player reconnection.

Geo-routing & peering

BGP-aware routing that sends viewers to the nearest healthy PoP, with ISP-level peering optimization for the largest networks in each market.

How operators use it

Sports broadcaster

Live final with 800k concurrent viewers

During a championship final, the primary CDN hit a regional capacity ceiling in the 78th minute. The multi-CDN layer shifted 40% of traffic to the secondary within 11 seconds — none of the audience saw a rebuffer, none of the players reconnected.

Telco operator

Nationwide AVOD launch

With SSAI stitched at the edge, the operator launched ad-supported tiers across 14 million broadband subscribers without any client-side SDK changes. Ad fill rate climbed from 62% to 91% because inventory was no longer lost to ad blockers.

Regional OTT service

Multi-region content licensing

Edge workers enforce geo-blocking and sub-rights windowing per country, with license enforcement handled in the manifest path — so a single content catalog can serve 9 markets with different rights without forking the content pipeline.

Technical details

Streaming protocols

HLS (TS & CMAF)
MPEG-DASH
Low-Latency HLS
CMAF chunked transfer
RTMP ingest
SRT ingest

CDN partners

Akamai
Cloudflare
Fastly
AWS CloudFront
Google Cloud CDN
Regional CDNs (Lumen, Edgio, Bunny)

Edge capabilities

Token signing & validation
SCTE-35 SSAI stitching
Geo-blocking
URL rewriting
A/B routing
Device manifest shaping

Ad insertion

SSAI with SCTE-35
VAST 4.x / VPAID
Ad pod optimization
Manifest manipulation
Beaconing at the edge

Performance targets

Sub-2s startup time
< 0.3% rebuffer ratio
LL-HLS 3s glass-to-glass
99.99% delivery availability

Security

TLS 1.3 everywhere
Token-based playback auth
DDoS protection at edge
Hot-link prevention

Key Takeaways

Multi-CDN orchestration across Akamai, Cloudflare, Fastly, CloudFront, and regional providers
Server-side ad insertion at the edge with SCTE-35 and VAST 4.x support
HLS, DASH, and Low-Latency HLS packaged just-in-time from a single mezzanine
Programmable edge workers for token auth, geo-blocking, and manifest shaping
Active-active origin with automatic failover under 3 seconds
Real-time per-session routing driven by QoE telemetry, not static GSLB

Frequently Asked Questions

Do we have to swap our existing CDN contracts?

No. Vucos orchestrates the CDNs you already have under contract. Bring Akamai, Cloudflare, or any combination you've negotiated — Vucos measures each in real time and routes based on actual performance. Operators typically see commercial leverage improve too, because each CDN knows it only keeps the traffic it earns.

How does failover actually work for live streams?

Two mechanisms run in parallel. Session-level multi-CDN routing shifts new viewers to the healthy CDN within the DNS TTL window; for viewers already playing, the player SDK rotates to an alternate manifest URL on the next segment request, typically within 2 to 6 seconds. Origin failover is faster still — active-active storage means the secondary is already hot, so the transition completes in under 3 seconds without the player reconnecting.

Can SSAI beat client-side ad blockers?

Yes — that's one of the main reasons to stitch server-side. Because ads are spliced into the same manifest as content, there is no separate ad request for a blocker to intercept. Ad fill rates typically rise from the 50-70% range seen with client-side tags into the low 90s after SSAI migration, directly recovering revenue that was being lost at the browser.

How low can latency go?

Low-Latency HLS and LL-DASH deployments consistently deliver 3-second glass-to-glass latency in production for live sports and news. For interactive use cases (auctions, betting, live game shows) Vucos can run WebRTC or CMAF ultra-low-latency profiles under 2 seconds, with tradeoffs on reach and caching.

How is geo-blocking enforced?

At two layers. The edge worker checks the requesting IP against the geo-policy before issuing a signed manifest — so no playable URL is ever handed to an out-of-territory viewer. For extra hardening, DRM license issuance is also geo-scoped, so even an exfiltrated manifest will not yield a decryption key outside the authorized region.

What's the impact on egress cost?

Two things move the number. Multi-CDN routing gives commercial leverage (each vendor prices sharper to hold traffic share). And intelligent routing avoids the worst rebuffer-driven re-requests, which in measured deployments cut wasted egress by 7 to 12%. Many operators find that the efficiency gains pay for the orchestration layer on their own.

Ready to learn more?

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