migrationreal-timerunbook

Migration Runbook: Moving VR/Real-Time Apps Off a Sunsetting Platform

UUnknown

2026-03-11

10 min read

Step-by-step migration runbook for VR/real-time apps moving off a sunsetting platform—identity portability, session migration, networking and fallbacks.

Sunsetting platforms mean two things for product teams: a looming deadline and a complex migration problem. If your VR or real-time app depends on a discontinued VR platform (like Meta Workrooms being closed in Feb 2026), your users — identities, live sessions and synchronized worlds — won’t survive a naive cutover. This runbook gives a pragmatic, technical migration checklist and architecture alternatives focused on identity portability, session migration and real-time networking.

What this runbook delivers (fast)

Most important first: follow the phases below in order. You’ll get a repeatable plan for auditing, exporting, rehosting and cutting over live sessions with concrete engineering patterns and trade-offs for real-time systems in 2026.

Quick migration checklist (executive view)

Inventory: users, credentials, sessions, room-state, assets, telemetry.
Export: users (IDs), profiles, auth logs, session snapshots, assets (glTF, textures).
Design: choose transport (WebRTC/QUIC/UDP), sync model (authoritative/CRDT), and identity strategy (OIDC, SCIM, DIDs).
Build: implement import adapters, token issuance, snapshot replay, TURN/SFU stack, authoritative servers.
Validate: test in staging with synthetic and production-like users, measure latency and consistency.
Cutover strategy: freeze window, handoff, rollback plan, user communications.
Observe: SLOs, session continuity metrics, cost burn-rate monitoring.

Phase 0 — Assess & inventory

Before exporting anything, catalog everything that links your product to the platform. This emits the migration surface area.

Identity: provider IDs, OAuth client IDs, refresh tokens, social logins mapped to platform IDs.
Sessions: live rooms, participant lists, authoritative server endpoints, sticky session info.
State: world objects, authoritative physics state, chat history, voice stream metadata, CRDT logs if present.
Assets: avatars, 3D models, textures, shaders (formats and license metadata).
Telemetry: analytics events, audits, usage logs and billing data.

Practical steps

Run a DB schema and API capability audit. Identify endpoints for user export and room snapshots.
Ask the vendor for export windows and official data-export APIs (document the JSON/Protobuf schema).
Map every platform-specific ID to your canonical UUIDs. If none exist, create a mapping table now.

Phase 1 — Identity portability (make accounts live elsewhere)

Identity is the lynchpin. If you lose user identity mapping you lose ownership and continuity. In 2026, organizations increasingly adopt OIDC + SCIM for provisioning and DIDs for long-term portability. Choose the path that preserves UX and security.

Options and trade-offs

OIDC provider import: export identity records and import into a new OIDC provider (Auth0, Keycloak, Amazon Cognito). Works well for password-based and social-linked accounts. Requires re-issuing tokens and a migration login flow.
Account linking with federated login: ask users to link existing accounts via social SSO or email verification. Lower risk but needs user action.
SCIM for enterprise customers: use SCIM to provision corporate users into the new identity provider — preserve group memberships and roles.
DID / Verifiable Credentials: consider minting verifiable credentials mapping platform IDs to a portable DID where compliance and long-term portability matter.

Concrete runbook tasks

Export canonical user records as newline-delimited JSON with primary keys and metadata: email, created_at, platform_id, social_ids, avatar_ref, consent_flags.
Create an import job that upserts into your new identity store while preserving the platform_id in an external ID column.
Generate new refresh tokens and store a token_bind timestamp. Revoke platform-side tokens if possible.
Implement a one-click account recovery/login flow: sign-in via platform social provider (if available) -> validate -> issue new token locally. Use email OTP if social login is unavailable.
Notify users with clear steps and deadlines; provide a CLI/JSON export for business customers to self-import.

Phase 2 — Session and state migration (live rooms without grief)

Moving cold data is straightforward. Live sessions require carefully orchestrated handoffs to avoid user-visible desyncs. Use snapshot-and-replay or proxy-based handoff strategies.

Patterns

Snapshot + replay: snapshot the authoritative room state, start your replica server, replay queued events from the snapshot timestamp to the present, then shift clients to the new endpoint.
Proxy “ghost” handoff: run a proxy that forwards client messages to both old and new servers until the new server is warmed and in sync, then cut clients to the new server.
CRDT continuous sync: if your app uses CRDTs for shared state, export the CRDT vector clock and let replicas converge after import. This reduces lost operations but requires CRDT-compatible models.

Technical recipe — snapshot & replay

Take an authoritative snapshot in a compact format (Protobuf or MessagePack) at T0 and upload to a durable store (S3/R2).
Start your new room server and import the snapshot as the initial state.
Stream event logs from T0 to the present using a pub/sub (e.g., Kafka, NATS JetStream, Redis Streams). Reapply events in-order.
Run deterministic validation: compare hash of important objects (positions, inventories) between old and new server for a test cohort.
Use a proxy to dual-write user input for a warm period, then atomically switch the room DNS to new endpoints with short TTLs and sticky session awareness.

Phase 3 — Real-time networking & transport alternatives

Transport choices define latency, NAT traversal complexity, and scaling cost. In 2026 the common stack for VR/real-time apps has matured: WebRTC remains the default for peer media + datachannels; QUIC and UDP-based protocols (including WebTransport) are rising for state sync; edge-hosted authoritative servers reduce RTT.

Architecture options

Pure P2P (mesh): cheap, low central cost, but poor for many participants and NAT/turn costs explode with media. Use for very small rooms.
SFU-based (media-focused): Server forwards media, clients exchange datachannels P2P. Good for voice/video heavy rooms.
Authoritative server + UDP/QUIC: Server maintains authoritative physics and state. Use Agones on Kubernetes for game servers or managed game servers (PlayFab/Photon). Best for deterministic sim and anti-cheat.
Edge compute for proximity: Place lightweight authoritative or relay nodes at the edge (Cloudflare Workers, Fastly Compute@Edge, Fly) to reduce RTT — consider WASM for deterministic logic in 2026.

Practical networking checklist

Implement WebRTC with TURN/STUN for media, but prefer WebTransport/QUIC for state channels where available (better head-of-line blocking behavior).
Choose SFU (e.g., Janus, Jitsi, LiveKit, Agora) for media and an authoritative UDP/QUIC server for physics/state. Keep the two layers decoupled.
Plan NAT traversal: deploy global TURN relays and test performance from target geographies.
Design packet formats for small deltas; use binary serialization (Protobuf/FlatBuffers) and sequence numbers for idempotency.
Build client-side dead-reckoning, interpolation and reconciliation strategies to mask small network hiccups.

Phase 4 — Assets, avatars and content portability

3D assets are large and often platform-locked via proprietary formats. Aim to export glTF or USDZ, generate CDN-friendly LODs, and normalize metadata (licenses, creator, version).

Tasks

Export models to glTF/GLB and bake textures down to web-friendly formats (KTX2/Basis Universal).
Re-host assets on a CDN with immutable content hashes and a migration manifest mapping old URIs to new ones.
Preserve avatar customization state separately (skeleton parameters, blendshapes) so users keep their look without re-uploading full models.

Phase 5 — Cutover, testing and rollback

Cutover is where plans meet users. Use canary and dark-launch patterns, and build quick rollback paths.

Start with a small cohort of power users and measure session continuity and perceived latency.
Use feature flags to enable the new backend per user/room ID.
Keep the old platform available read-only if possible for a short period to reconcile data discrepancies.
Automate rollback: DNS TTLs <= 60s, maintain backwards-compatible token acceptance for 24–72 hours post-cutover.

Security, compliance and data governance

Shutting platforms can expose data governance liabilities. In 2026 regulators expect explicit consent flows for export and deletion.

Log every data export and notify users when personal data is moved.
Preserve and honor deletion requests — keep a secure audit trail.
Rotate keys used to access exported data and encrypt exports at-rest with customer-specific keys where required.
Document the privacy impact and update your privacy policy to include the migration handling plan.

Observability and SLOs

Define SLOs for session continuity (e.g., 99% sessions survive migration), latency (p50/p95 RTT), and error rates. Measure real-user metrics.

Instrument session lifecycles (created, snapshot, migrated, resumed, failed).
Use synthetic load tests that emulate thousands of concurrent users to validate end-to-end timing.
Trace packet loss and reconnection rates; correlate them with geographic edge choices.

Case study — Example 8-week migration timeline

The following is a practical plan for a mid-sized VR productivity app (10k monthly active rooms).

Week 1: Inventory & vendor export agreements; spin up new identity tenant; map IDs.
Week 2–3: Build import jobs for users and assets; implement token issuance and account-linking flows.
Week 4: Implement room snapshot export/import and event streaming pipeline (Kafka/NATS).
Week 5: Deploy authoritative servers on Agones/K8s; edge relays in 3 target regions.
Week 6: Staging canary with synthetic users; measure latency and reconciliation correctness.
Week 7: Invite 5% of real users for pilot cutover; monitor SLOs and fall back if needed.
Week 8: General availability cutover, deprecate old platform access on a rolling basis.

Tooling cheat-sheet (short)

Identity: Keycloak, Auth0, Amazon Cognito, SCIM tooling
Real-time transport: WebRTC (LiveKit, Janus), QUIC/WebTransport, UDP servers
Authoritative servers: Agones (K8s), PlayFab, Photon
State sync: CRDT libs (Yjs, Automerge), Protobuf/FlatBuffers, Redis Streams/Kafka
Edge compute: Cloudflare Workers/WASM, Fastly Compute@Edge, Fly
CDN & storage: S3/R2 + CDN, KTX2 for textures, glTF for models

2026 trends and future-proofing advice

Late 2025 and early 2026 highlighted consolidation and retrenchment in XR (e.g., Meta closing Workrooms in Feb 2026). That reality drives these actionable lessons:

Design for portability: prefer open formats (glTF, WebXR, OIDC) and keep canonical IDs separate from vendor IDs so you can rotate providers without massive glue code.
Use edge-hosted micro-authoritative nodes: move authoritative decisioning closer to users to reduce RTT and reduce single-provider dependency.
Adopt QUIC/WebTransport for state channels: better resiliency to head-of-line blocking and better performance on modern networks.
Plan for multi-provider media: split media SFU from state servers so you can replace one without touching the other.
Consider DID-backed portability: as regulators and enterprises demand data portability, DIDs + VCs provide long-term assurances.

“Meta announced the end of its Workrooms standalone app in Feb 2026 — a clear reminder that platform dependency is a product risk.” — Industry reporting, 2026

Key takeaways

Identity first: preserve platform IDs, implement account linking, and complete imports before session migration.
Design your session handoff: snapshot + replay or proxy handoff — choose based on session volume and latency tolerance.
Use the right transport: WebRTC for media, QUIC/WebTransport for state channels, authoritative servers for simulation.
Test end-to-end: synthetic and small-scale real-user canaries expose the issues you can’t predict in lab tests.

Call to action

If your product depends on a sunsetting platform, start the inventory phase today. Download the runbook checklist, spin up a small import test, and schedule a stakeholder meeting to lock the migration window. If you need an expert audit — including identity export scripts, snapshot schemas, or recommended QUIC-based architectures — reach out for a migration review tailored to your stack.

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