Moodle vs Canvas LMS

Moodle's extension model is built around typed plugins, and the identity options are mostly in core. Moodle core ships authentication plugins for manual accounts, email self-registration, external database, LDAP, LTI, OAuth 2, Shibboleth and web services, so most directory and federated sign-on needs can be met without a third-party add-on. The exception is SAML 2. Single sign-on over SAML 2 is delivered through the *SAML2 Single sign on* plugin from the Moodle marketplace, which is a separate maintenance item. Before you commit, confirm that the plugin version you intend to use declares support for your exact target Moodle release, since a plugin that works on one release may lag the next. Plugin types and their APIs are documented in the Moodle plugin types reference, which is the right starting point for your developers.

Canvas extensibility is different in kind. Canvas is a Ruby codebase, so customizing it means changing or wrapping that code, and the supported path depends on the project's own documentation rather than a catalogue of installable plugins of the Moodle type. Ask your integration team to map each required customization against the current code and the project wiki, and to decide whether they will carry that code through every upgrade. For identity, do not assume SSO or LTI behavior from the product name. Confirm in the release you plan to run which SSO protocols are supported out of the box, which need custom development, and how LTI tool registration is handled, using the Canvas README and the project wiki as the starting point.

Whichever platform you pick, the identity decision carries recurring cost. Each plugin or custom integration must be retested when the LMS, the identity provider or the PHP or Ruby runtime changes, and that testing is usually the largest ongoing effort in a self-hosted install. Ask any implementation partner to quote SSO, LTI and directory integration as separate line items, with the test cases, the identity provider versions covered and who owns patching afterward. Illustratively, a school that needs SAML 2 sign-on on Moodle will spend its effort on the marketplace plugin's compatibility with each major release, while a university that needs custom SSO on Canvas will spend it on code it must maintain. Make that trade-off explicit before signing.

The running cost of a self-hosted Moodle or Canvas install is set less by the license, which is free for both in their open-source forms, and more by who does the work. Infrastructure is the first line item: a Moodle 5.3 site needs 64-bit PHP 8.3 or later with PostgreSQL 17, MariaDB 11.4, MySQL 8.0 or SQL Server 2019 as supported minimums, while a Canvas production install needs PostgreSQL 14 or later, Redis 6.x or later, and, according to the Canvas Production Start guide, at least 8GB of RAM. Ask any provider to size the web, database, cache, background job and SMTP components separately, and to show how each scales with concurrent users and storage. Those are the recurring line items that will move most.

The second cost driver is skills. A Moodle team mostly needs PHP operations, Moodle upgrade testing and plugin compatibility checks, and it must also point the web server document root at the new /public directory from Moodle 5.1 onward. A Canvas team needs Ruby, Passenger, background job supervision and Redis operations, and the Canvas guide was written and tested on Ubuntu 22.04 LTS. For Canvas, the guide directs installation problems to the community mailing list or IRC channel rather than to Instructure support, so the internal or contracted engineers who resolve those problems are a cost you carry directly. Confirm with Instructure, in writing, what commercial support exists for a self-hosted install before you assume any.

Support and upgrades are where recurring cost is easiest to underestimate. Moodle has its own partner network through Moodle Partners and MoodleCloud, and DeployOpen offers retainers for ongoing support, upgrades and patching under a written scope. One-time costs include the initial build, data migration, identity and LTI integrations, and the first plugin selection and hardening pass. Recurring costs include patching, the Moodle major upgrade cycle, minor point releases, plugin maintenance and any retainer. Ask each provider for a quote that separates these, names the Moodle or Canvas versions it covers, states what is excluded from upgrades, and lists the plugins or customizations it will maintain after go-live.

Projects on either platform tend to slip at the same few points: identity integration, data migration, plugin compatibility and upgrade testing. On Moodle, the install itself is the easy part. Teams should settle the PHP and database alignment first: Moodle 5.3 requires 64-bit PHP 8.3 or later and PostgreSQL 17, MariaDB 11.4, MySQL 8.4 or SQL Server 2019 or later, and a site must already run Moodle 4.4 or later to upgrade. From Moodle 5.1 the web server document root must point to the public directory, so a server configured for an older layout can show directory listings or errors. Plugin selection then drives most of the testing time, and SSO through SAML2 or LTI needs its own test cycle against the identity provider and the tool provider.

Canvas moves the effort into the server stack. The Canvas Production Start guide describes Apache with Passenger, a background daemon for automated jobs, an outgoing SMTP server and Redis 6.x or above for caching and OAuth2, alongside PostgreSQL 14 or later and at least 8GB of RAM. Each of these is a separate component that needs monitoring, patching and a tested restart order. The guide was written and tested on Ubuntu 22.04 LTS and points installation problems to the community mailing list or IRC channel, so the reader should confirm in writing who will own troubleshooting in their scope.

For both platforms, ask the implementer to scope identity integration, course and user data migration, plugin compatibility checks and a test upgrade in writing before work starts. Ask who signs off each test, what data sets are used, and how rollback works if an upgrade fails. DeployOpen plans, integrates and documents these items under a fixed scope agreed in writing, so the scope document should name the identity provider, the source LMS export format, each plugin and the Moodle or Canvas release targeted, with the test environment defined before the production cutover date is set.