Why run your own proof of concept?
Every figure on vendor pages, and every score on this site, comes from public statements. A proof of concept turns those statements into your own evidence. It is also the best time to see how a vendor's team works with yours.
What should be in scope?
Pick one branch site, one group of remote users and one important cloud or SaaS application. If you plan to replace VPN access, include one private application. If AI controls matter to you, include a small group of AI tool users. Keep the scope small enough to finish in a few weeks.
How do you set success measures?
Write them before the trial starts. Examples: latency to your main applications at busy hours, time to onboard a new site, time to make five routine policy changes, number of consoles touched, whether a test data pattern is blocked in a web upload and in an AI prompt, and how quickly the vendor answers a support ticket.
Which test cases matter most?
Test decryption and inspection on real traffic. Test a failover at the branch. Test a user moving from office to home. Test a new vulnerability scenario by asking the vendor how it would protect you and how you would know. Test the reporting: can you answer a question an auditor would ask from the logs alone.
What should you get in writing?
Ask for the SLA document and its credit terms, the location list for your regions, the certification reports you need, the vulnerability response process, the licensing basis and how overage is handled, and the exit terms. Pricing is quoted per deal; none of the six vendors on this site publishes a SASE price list.
How do you compare the results?
Use the same scorecard for every vendor. Our weighting lab shows one way to weight criteria; replace our scores with your own results and your weights. On our published weights the three highest-ranked platforms are Cato Networks, Netskope and Fortinet, but your proof of concept should decide.
How long should it run?
Long enough to cover a normal business cycle at the branch, including a busy day and a quiet one, and at least one policy change request from the business. Two to four weeks is common for a small scope, but set the end date with the vendor at the start and agree what happens to the configuration and data when the trial ends.
Who should be involved?
Include someone from networking, someone from security operations and, if you can, one person from the help desk who will field user complaints. Their notes on day-to-day effort are often more useful than the headline test results.