Founders Don’t Want to Be ISPs
If you run an infra‑heavy SaaS, a data platform, or an API business, you probably didn’t sign up to become an ISP. Early on, “the Internet” is just whatever bandwidth your cloud or data center gives you. Over time, graphs, bills, and incidents start to pile up, and you realise you’re debating BGP, 95th percentile, and upstream providers in Slack. At that point, you’re not just a cloud tenant anymore; you’re operating a small network. The hard question is: when does it make sense to keep rolling your own IP transit, and when is it smarter to bring in a network partner whose entire job is to design and operate Internet connectivity?
What “Rolling Your Own IP Transit” Really Involves
On paper, rolling your own IP transit sounds simple: get a 10G port, announce some prefixes, and go. In practice, it means owning everything from BGP sessions and routing policies to capacity planning and 95th percentile billing. Someone on your team has to choose upstreams, negotiate contracts, and understand how different IP transit providers behave for different regions and eyeball networks. They need to debug odd traceroutes, recognise route leaks and hijacks, and react when one upstream suddenly starts dropping packets for a specific ISP or country.
Beyond that, managing IP transit in‑house means you’re responsible for incident playbooks around connectivity: what to do when one provider is flapping, when latency to a big customer region jumps, or when a DDoS attack starts saturating a link. You need good monitoring for per‑upstream performance, clear bandwidth graphs, and alerting that does more than scream “packet loss somewhere.” None of this is impossible, but it soaks up some of your rarest resource: senior engineering time and attention.
When It Still Makes Sense to Roll Your Own
There is a stage where keeping IP transit fully in‑house is a perfectly rational choice. If your traffic is still modest, let's say, low hundreds of Mbps at 95th percentile, and concentrated in one or two regions, a straightforward dual‑transit setup can work very well. If you have at least one strong network engineer who enjoys routing, understands BGP communities, and is comfortable tuning traffic flows, you can iterate quickly and keep costs low by talking directly to IP transit providers.
At this stage, your biggest risks are usually product and go‑to‑market, not whether you could shave 5 ms off latency to a particular ISP. You want simple, solid IP transit, clear visibility, and a couple of basic incident playbooks. You don’t necessarily need a full network partner, and you may not want to pay a margin for services you can competently handle yourself. In other words, if network complexity is still low compared to your product complexity, rolling your own IP transit can be the right call.
Signals That It’s Time for a Network Partner
As your startup grows, the balance slowly shifts. A few clear signals tend to appear together. First, your IP transit bills are no longer background noise. At several hundred Mbps to multi‑Gbps of 95th percentile traffic, line items like “bandwidth” and “egress” start to matter for gross margin. Small percentage changes in your IP transit spend show up directly in unit economics, especially for bandwidth‑heavy products like video, data pipelines, or real‑time collaboration.
Second, your incidents change character. Early incidents are often “everything is broken” events: a data center outage, a single‑provider failure, or misconfiguration. Later, you start seeing “it’s bad for this ISP or this region” incidents. Users on one mobile carrier in one country are angry, but other users are fine. These partial failures require smarter routing, better upstream diversity, and sometimes peering or traffic engineering. They also require someone to sit between you and multiple IP transit providers, looking at data and making fast decisions.
Third, your senior engineers are stretched. Instead of focusing on core product work, features, performance, reliability at the application layer, they are tied up debugging BGP sessions, negotiating new commits, or designing failover between upstreams. They might be perfectly capable of doing it, but the opportunity cost is huge. When you reach the point where network incidents and IP transit questions routinely interrupt your roadmap, you are paying a hidden tax for rolling your own.
How a Network Partner Changes the IP Transit Equation
Bringing in a network partner essentially means treating IP transit, routing, and connectivity as a specialised product you buy, not an internal side project. A good partner aggregates capacity across many customers, so they can negotiate better deals with upstream IP transit providers and maintain rich operational knowledge about how different routes and networks behave. They also maintain mature incident playbooks: what to do in case of route leaks, which knobs to turn when a specific ISP is having issues, how to rebalance traffic to keep 95th percentile under control without sacrificing performance.
Instead of you juggling multiple IP transit contracts and BGP configurations, the partner presents a simpler interface: clear commits, sensible 95th percentile expectations, multi‑homed redundancy, and optional peering in key locations. You describe what you need; regions, latency targets, tolerance for failover events, growth expectations and they propose an IP transit and connectivity design that fits. From your team’s perspective, you move from “owning all the network internals” to “defining requirements and consuming a managed network layer.”
Comparing In‑House IP Transit vs a Network Partner
Here’s a simple way to compare the two approaches:
| Aspect | Roll Your Own IP Transit | Use a Network Partner for IP Transit |
|---|---|---|
| Team focus | Senior engineers manage BGP, upstreams, and routing incidents | Team focuses on product; partner owns connectivity and IP transit operations |
| Operational maturity | You design and test playbooks yourself | You inherit battle‑tested playbooks and 24/7 network expertise |
| Cost leverage | Depends on your volume and negotiation with each provider | Aggregated buying power and optimised IP transit and peering strategy |
| Complexity to manage | You coordinate providers, IXPs, peering, and DDoS responses | Partner abstracts providers, IXPs, and advanced routing policies |
| When it fits best | Smaller scale, simple footprint, strong in‑house network skills | Growing scale, complex footprint, rising IP transit bills, stretched team |
This is not an all‑or‑nothing decision. Some teams start with in‑house IP transit design and later bring in a partner for specific regions or use cases. Others start with a partner from day one once traffic justifies it, keeping only a thin layer of network knowledge internally. The important part is to be deliberate: understand what you are actually signing up for when you “just order another IP transit port” and weigh that against where your engineering hours create the most value.
A Simple Decision Framework for Founders
If you like checklists, here is a straightforward way to decide whether it is time to talk to a network partner. Ask yourself:
- Is your 95th percentile traffic at least in the high hundreds of Mbps and clearly growing, such that IP transit bills matter for margin?
- Are you already multi‑homed and still seeing painful, ISP‑ or region‑specific incidents that are hard to diagnose and resolve quickly?
- Do you lack a dedicated network engineer, or is that person constantly context‑switching away from core product work to handle IP transit issues?
- Are you interested in public or private peering, but hesitant to invest the time and expertise to do it safely on your own?
If most of these are “yes,” you are in the zone where a network partner can turn IP transit from a noisy, fragile subsystem into a predictable, well‑run service. If most are “no,” it is usually better to focus on solid single or dual‑transit design, observability, and a few crisp incident playbooks first.
Get an IP Transit Reality Check
If you are on the fence about whether to keep rolling your own IP transit or bring in a network partner, you do not have to guess. Send a short email to sales@shifthosting.com with your current 95th percentile bandwidth, your main data center or cloud regions, and how many upstream IP transit providers you are using today. The team will review your setup, audit your IP transit, latency, and reliability profile, and suggest the most sensible approach forward for your SaaS or infra‑heavy product.
