Uptimo tells you whether customers can actually buy, not just whether the server responds. It walks the paths you earn from in a real browser: login, shopping cart, delivery details and the payment gateway. Steps are built from a list or described in one sentence, with no code to write and nothing to install on your side.
When a step fails, Uptimo leaves evidence instead of a message: a recording of the run, a screenshot of every step and a HAR file, so a developer can start fixing rather than reproducing.
Nine check types cover the rest: HTTP, HTTPS, full page with assets and HAR analysis, DNS, ping, TCP port and SSL certificate expiry. Alerts reach email, Slack, Microsoft Teams, SMS or webhooks, with escalation paths and maintenance windows. SLA reports measure availability to the second and go out weekly or monthly. Four roles and service groups keep agency clients separate.
Data sits on a server in Germany. Free plan available; the trial needs no card.