A spam comment on an Atlassian blog post is no news, but the post is worth a look

What this item actually is

The page we were handed is a comment, not an article. It was left under an Atlassian blog post about moving from Data Center to the cloud, and the comment says only that the writer's point of view was interesting and that they have a question. The question never appears.

That pattern, flattery with no detail, is common in spam. Nothing in it is a product launch, a study or a policy change, so there is nothing to report as news. We are telling you so instead of dressing it up.

The post underneath is useful

The page on atlassian.com does contain a real guide. It is aimed at companies that run Jira and Confluence (Atlassian's project-tracking and team-document tools) on their own servers, a setup called Data Center, and are thinking about moving to Atlassian's cloud.

The main worry it addresses is custom plugins. These are small pieces of software a company built to fit its own workflows, pull in data from older systems, or connect to internal tools. The guide's message is that you do not lose that ability in the cloud, but the way you build it changes.

Why cloud customization works differently

On Data Center, the software runs on the customer's own server. Companies could even change the product's source code, and the change affected only their own copy.

In the cloud, Atlassian runs the software, and every customer shares the same central code. Each customer's data sits in its own isolated tenant, meaning a walled-off slice. Because a change to shared code would affect everyone, customers cannot edit the product code or reach into the database directly.

Instead, Atlassian offers APIs, which are defined doorways that let a custom app read, change or delete data, react to events and adjust the screen. The guide says these limits make it less likely that a badly behaved app slows down your whole Jira or Confluence. It also describes an "API contract," a public policy for how changes to those doorways will be handled, so builders know what to expect.

Forge, Atlassian's build-it-here option

The tool the guide leans on is Forge, a platform for building apps that live inside Atlassian Cloud. It can do three main things:

• Send and receive data through Atlassian's APIs, such as listing Jira issues from a time period or adding a comment to a Confluence page.
• Listen for events, such as a new issue being created or changing status, and react automatically.
• Change the screen by adding buttons, form fields, menu items or whole custom pages.

Forge runs app code in a serverless setup. That means the code runs only when needed, on infrastructure Atlassian manages, so a company does not have to host its own web service. Apps are written in JavaScript, and Forge provides separate development, staging and product environments for testing, plus built-in monitoring.

The three-step migration path

For plugins, the guide lays out three phases.

Take inventory. List every custom plugin on your instance. The Cloud Migration Assistant can help with this. Then ask which ones are obsolete, or already covered by features built into the cloud product or by an off-the-shelf app in the Atlassian Marketplace.

Design and deploy. For plugins that still need rebuilding, map what each one does to its cloud equivalent. The guide advises aiming for the same outcome rather than copying the old plugin one-for-one, since the cloud does things differently.

Manage and innovate. Apps are managed in a developer console with alerts and monitoring. The guide recommends subscribing to the developer changelog so you hear about breaking API changes before they take effect.

How to read the claims

This is a vendor's own guide, so treat it as the company's case for its product. It quotes a customer from an unnamed Enterprise Cloud account, who says work that took 10 days now takes 4 hours because of a Forge app. That is a single, anonymous example, not a measured average.

Still, the technical explanation of why cloud and on-premise customization differ is clear and checkable against Atlassian's developer documentation, which the guide points to.