Resource History
From any resource's detail panel, click Show History to switch the panel into history mode. You get a timeline of every scan this resource appears in, navigation buttons and keyboard shortcuts to step through them, and a property-level diff for scans where something changed. Great for "when was this VM resized?" or "who added this RBAC role?".
On This Page
Timeline & Navigation
The Timeline: strip is a row of dots, one per scan in the resource's history. Click any dot to jump to that scan, or use the navigation row of buttons: jump-to-oldest, previous, next, jump-to-latest. A position indicator on the right reads 5 of 23 and a change summary shows N changes in orange when the current scan has any.
Timeline legend
- Green dot, filled
- Resource was created in this scan.
- Red dot, filled
- Resource was deleted in this scan.
- Filled dot
- Resource was modified in this scan.
- Hollow circle
- Resource existed but had no changes in this scan.
- Amber-outlined dot
- The currently selected scan.
What "modified" counts
Modified includes property changes, tag changes, and RBAC changes.
Change Diff
For modified scans, the body shows a Changes from Previous Scan section with a property-level diff inline — added, removed, and modified values shaded green, red, and yellow like a code diff.
When this scan is the first one the resource was discovered in, the header gets a green Created badge and the body shows Resource Created – All Properties with everything green. When this scan is the one where the resource was no longer present (removed from Azure), the header gets a red Deleted badge and the body shows Resource Deleted – All Properties with everything red.
Tags and RBAC changes also show up inline in the Key Information section — added tags get green badges, removed get red, modified get yellow, unchanged stay blue. Hover a yellow tag badge to see its previous value.
Filter Controls
- Changes Only
- Skips scans where this resource didn't change. Off by default.
- Show Hidden
- Includes changes you've dismissed via ignore rules. Off by default.
Tip
Turn on Changes Only when you're scanning a long-lived resource's history. It skips you straight to the scans where something actually changed.
Keyboard Shortcuts
Active when no input field has focus.
- ←
- Previous scan in the timeline.
- →
- Next scan in the timeline.
- Home
- Jump to the oldest scan in this resource's history.
- End
- Jump to the latest scan in this resource's history.
Cross-Links
From within history mode, two header buttons let you pivot to other parts of StratoLens:
- View at This Time
- Opens Explorer at the snapshot you're currently viewing in history. Useful when you spot an interesting change and want to browse the rest of the environment as it was at that point.
- View This Change
- Opens Change Tracking scoped to this exact pair of scans (older vs. newer), so you can see the diff in the broader change-tracking UI.
- Back to Current State
- Returns the panel to the regular detail view at the originally selected snapshot.
History only goes as far back as scan retention
If a resource was deleted before your earliest retained scan, it won't appear in history. Scan retention is configured in Settings > Schedules.
Troubleshooting
This entity was not found in any completed scans
Answer
StratoLens has cost data for the resource (so it knows the resource exists) but it's never appeared in a successful inventory scan. This can happen for very new resources, or for resource types Azure doesn't return in inventory queries.
The history says "No changes" for a scan but I know I changed something
Answer
StratoLens compares inventory data between scans. Some changes (e.g., to fields Azure doesn't return in inventory queries) won't show up here. Use the Activity modal on the resource detail panel, or Change Tracking, to see Azure-side activity.
My ignored changes aren't disappearing
Answer
Make sure Show Hidden is off (it is by default). If hidden changes still appear, check that your ignore rule actually matches this resource type and property path. See Ignore Rules.