A proof of concept (POC) is a short, limited test that checks whether a product or service can do what you need, in your environment, before you commit to buying it. In IT and telecom, buyers commonly run POCs for platforms such as SD-WAN, cloud phone and contact center systems, and security tools, where integration with existing systems and real-world performance are hard to judge from a demo. A POC is not the same as a pilot or a proof of value, though vendors often use the terms loosely.
At a glance
- A POC tests specific requirements in a limited setting, often a lab, a test tenant or a few non-critical users or sites.
- It works best with written success criteria agreed before the test begins.
- POCs are usually short, commonly a few weeks, and may be free or paid depending on the vendor.
- A POC answers “can it work for us?”; it does not show how the solution behaves at full scale.
- Read the POC terms for purchase commitments, auto-conversion to paid service, and data handling.
What problem it solves
Vendor demos are built to show a product at its best. They rarely show how it handles your call routing, your legacy phone system, your mix of internet circuits or your identity provider. Buying on the strength of a demo risks a multi-year contract for something that turns out not to fit, discovered only after the migration has started.
A POC reduces that risk by testing the parts that are most likely to fail. It lets a buyer check integration, performance and administration with its own data and its own staff before money and time are committed. It also gives internal stakeholders evidence rather than vendor claims when the purchase decision is made.
How it works
Define the questions. Start from the requirements that carry the most risk, for example whether an SD-WAN appliance can steer voice traffic across two circuits, or whether a contact center platform integrates with your CRM. Write each as a pass/fail or measurable criterion.
Agree the scope and terms. Decide the environment, the users or sites involved, the duration, who supplies equipment and circuits, and the cost if any. A short written POC agreement should cover data handling, confidentiality, equipment return and whether anything converts to paid service at the end.
Run the test. Both sides assign people. The vendor usually configures the solution, sometimes with your team; your team runs the test cases and records results against the criteria.
Decide. At the end, review results against the agreed criteria, note what was not tested, and decide whether to proceed, run a pilot, or walk away.
POCs often follow a request for proposal (RFP) that has narrowed the field to one or two finalists. For examples of platforms where testing before buying is common, see our SD-WAN solution page.
When it matters for buyers
- Replacing core platforms. Phone systems, contact centers and WAN technology touch every user, so a failed choice is expensive to undo.
- Complex integrations. When the solution must work with CRM, identity, legacy systems or specific hardware, test those links directly.
- Close shortlists. A POC can separate finalists that look the same on paper.
- New technology for the team. A POC shows how much effort day-to-day administration will take.
- Executive approval. Results against agreed criteria are stronger evidence than a vendor presentation.
Questions to ask vendors
- Will you run a POC, and what does it cost, including hardware, circuits and services?
- Who on your side supports the POC, and how quickly do they respond during it?
- Can the POC use our own systems and data, and how is that data handled and deleted afterwards?
- Does anything in the POC agreement commit us to buy or convert automatically to paid service?
- Can configuration from the POC carry over into production if we buy?
- What will the POC not show us about running the solution at full scale?
How it differs from a pilot
A POC tests whether a solution can meet specific requirements, usually in a limited or test setting and for a short time. A pilot comes later: the solution runs in production for a small set of real users or sites, so it tests operations, support and user adoption as well as function. A proof of value (POV) is a third variant that sets out to measure business benefit, such as handle time or cost avoided. Many buyers run a POC, then a pilot, then a phased rollout, but the labels vary by vendor, so agree what the test is meant to prove before it starts.