Cloud Services

June, 2024


At the user endpoint, only an evergreen browser is required. Major releases will be tested on the current versions of:

When using outdated and/or other browsers, your mileage may vary. 3D features require hardware acceleration.

The Lighthouse audits, being run with slow network connectivity, result in these spectacular scores of a typical Vision 42 ® application:

For details, see the attached report. Even on an emulated mid-range smartphone from 2020, the score stays 100% across the board. Note we make use of HTTP/2 and IPv6. An application's performance is regularly assessed. In case of diminishing performance, measures will be taken to speed up the application. Among possible improvements are code refactoring, database tuning, and adding hardware.

Each application exists in at least three environments: production, quality assurance, and development. Software releases are done by continuous integration and continuous deployment (CI/CD). Its fully automatic nature limits human error. All versions of the source code, the database schemata, the documentation, and the configuration files are immutably stored in a blockchain. All data in the quality assurance environment is copied daily from production.

Application bugs will be fixed free of charge.


Cloud applications need infrastructure to run on; servers, storage, and network. Vision 42 selects a reliable and accomplished infrastructure-as-a-service (IaaS) provider to host the applications. At the time of writing, this provider is TransIP.

Although our IaaS provider guarantees and delivers 99.99% uptime, the availability of a Vision 42 application can be slightly lower. Keeping potential release issues in mind, the effective availability will be at least 99.9%. Internet and customer network issues are out of our control, so the perceived availability at certain user endpoints might be lower. Free or captive-portal based Internet access, like municipal WiFi, are often not stable enough and can cause sub-optimal operation. Intermediate cyber attacks of the distributed denial of service (DDoS) type, have been known to cause multi-hour Internet connection saturation [1]. Our current operational status and detailed uptime statistics can be consulted on a public status page. In case of calamities, news will be published on our website or on X.

The primary data centers are state-of-the-art and are located in Amsterdam and Rotterdam, in The Netherlands. See the attached fact sheet for details. Our IaaS providers have a massive bandwidth available.

Vision 42 applications run on redundant physical servers. All servers have been over-dimensioned, so they have power to spare. Currently, the specifications of a single virtual server are:

Our Domain Name System (DNS) provider is Cloudflare.

[1] The Netherlands has a powerful National Scrubbing Center against DDoS attacks.

The Datacenter Group Amsterdam.pdf

Backup and Restore

Although our IaaS vendor provides backups, we choose not to place all of our eggs in one basket. That is why we make use of independent backup-as-a-service (BaaS) providers. At the time of writing, these providers are Cloudflare and

All databases are continuously being replicated to Cloudflare [4], falling under EU jurisdiction:

Geographically, the secondary data center is located in Denver, USA [3]. In contrast with Amsterdam [1] and Rotterdam [2], Denver is located one mile above sea-level. The geographical difference between both locations provide protection against complete data-loss caused by most natural disasters. Additionally, offsite backups are kept at two separate locations in Belgium [5] [6]. In case a big asteroid destroys The Netherlands, Colorado, and Belgium at once, we fear your data may be lost. At that moment, it will be the least of your problems...

All backups are stored in both data centers and all offsite locations. Files are copied with hourly intervals. Daily, a full backup restore of every database is performed and verified. We keep many snapshots, so we can restore up to 3 years ago.

Our recover point objective (RPO) is 5 seconds at most, making use of database replication. Recover time objective (RTO) depends on the service level agreement (SLA) of your support formula and will typically be the next business day at most.

We offer a takeout service to leaving clients. A large ZIP-file will be provided, containing your data in easily readable CSV-files.


Our infrastructure and the applications are continuously being monitored. Alerts are sent to the engineering staff, who often solve the (rare) problem before a customer notices. Monitoring includes:


All servers run FreeBSD or Linux operating systems. We proactively update and upgrade all software. If an intrusion or a privilege escalation attempt is detected, automatic countermeasures will fire immediately.

Instead of passwords, salted cryptographic hashes are stored in the databases. Weak passwords are not allowed. Brute-force attacks are impeded by delaying failed authorization attempts.

All network connections are encrypted, both the client/server as the server/server connections. Certificates are always being verified. Strong certificates are used for our servers. Additionally, we make use of:

We hold these security ratings (reports attached):

Our TLS implementation is compliant with:

Our email is protected from eavesdropping and impersonation by:

Every write operation can be traced to a specific user, an IP address, and a browser type. Relevant server logging is being kept for 10 weeks, including:

ImmuniWeb SSL.pdf
Qualys SSL Labs.pdf
Mail Tester.pdf