Professional Services · Application Hosting
Production hosting for AI applications
RAG, agents, AI-native SaaS, custom AI apps. Multi-tenant by design, sovereignty-aware, observable end-to-end. Same engineering bench that runs the inference cluster, the pipelines, and the network fabric beneath them.
Representative deployment
Multi-tenantAI assistant SaaS · 3 tenants · shared serving pool
API Gateway
Auth · rate limit · tenant route
262 rps
tenant-alpha
eu-west · Premium
142 rps
tenant-beta
uk-south · Standard
89 rps
tenant-gamma
eu-west · Standard
31 rps
Shared GPU pool
8 × H100 · 71% util
Per-tenant rate limits + admission control. Noisy neighbour can't blow p99 for the others. Cost attributed per tenant.
Shapes we host
From RAG search to agentic SaaS
Different shapes, same operational discipline. The hosting concerns rhyme; the architecture follows the shape.
RAG-backed search + chat
Embedding service, vector store, retrieval ranker, generation, evaluation pipeline. The end-to-end pattern most enterprise AI starts with.
Representative stack
OpenSearch · pgvector · Weaviate · LlamaIndex · LangChain
Agentic workflows
Planning loop, tool runtime, memory layer, eval and safety harness. From single-agent assistants through multi-agent pipelines.
Representative stack
LangGraph · CrewAI · AutoGen · custom planners
AI-native SaaS
End-user product running on top of one or more models. Auth, billing, tenancy, observability, eval. The full hosted product, not just the model.
Representative stack
Your frontend · our serving + ops
Custom + bespoke
Internal copilots, vertical assistants, AI APIs, embedded inference in your existing product. Designed to your perimeter.
Representative stack
Whatever your existing stack uses
Where AI hosting goes wrong
The concerns we engineer in from day one
Most AI apps land in production then quietly accumulate operational debt. We close the failure modes before traffic hits.
Multi-tenant without noisy-neighbour blast
What breaks
One tenant burst kills p99 for the rest
How we engineer it
Per-tenant rate + admission control
The way you keep tenant A's traffic spike from blowing tenant B's latency. Tenant-aware admission control and per-tenant quotas, not just a shared rate limit.
Secrets that never end up in logs
What breaks
API keys logged at debug
How we engineer it
HashiCorp Vault / SOPS / sealed secrets
Secrets at rest, in transit, and in process memory. Rotated automatically. Never written to logs or traces. The discipline that lets compliance auditors stop looking.
Eval in production, not only in CI
What breaks
Eval suite ran once at launch
How we engineer it
Continuous eval on live traffic slice
Production quality slips quietly. We run continuous eval on a slice of live traffic, attached to alerts, attached to retraining triggers. The model that ships does not get to coast.
Cost attributed per tenant + per feature
What breaks
One GPU bill, no idea who used it
How we engineer it
Tenant tagging + per-prompt accounting
Multi-tenant hosting that cannot answer who is costing what is unrunnable as a business. Tagging from the gateway down through to GPU minutes, surfaced in the dashboards your finance team reads.
The reference architecture
The pieces we stand up by default
Not every app needs all six. The selection follows the shape; the discipline does not change.
Edge + API gateway
Auth, request validation, tenant routing, rate-limit, request logging. The first thing every request hits, hardened.
Embedding + retrieval service
Embedding model behind a thin service. Vector store of your choice. Hybrid retrieval with re-ranking. Hot-swappable embedder for re-index.
Agent + tool runtime
Tool registry, agent loop, memory layer, audit trail. Built so a new tool is a config change, not a redeploy.
Model serving + admission
Same serving fleet our Inference practice engineers. vLLM / SGLang / TensorRT-LLM picked against your workload, with tenant-aware admission control wrapped around it.
Eval + observability spine
Traces, metrics, logs, evals, lineage. One spine, queryable, alertable, exportable to your existing observability if you have one.
Secrets + policy + audit
Secrets vault, policy engine, audit log. Compliance posture is part of the architecture, not a bolt-on.
Ready-made surfaces
You can also start on a turnkey Yobitel surface
The architecture above is what we build for you. If you want a head-start, Yobitel already ships two managed surfaces you can step into now and tailor with us at any level. Bring a workload, walk out with the same operational discipline above the moment you sign.
Both surfaces are tailorable. Pick the layers you want operated for you, keep the ones your team owns. The bench that engineers the architecture above also runs both of these.
Your handover pack
What lands at sign-off
Concrete artefacts that make your hosted app runnable, evolvable, and auditable. Your team can take it forward without us.
Architecture decision record
Why this gateway, this vector store, this agent runtime. What we ruled out and why. Reviewable in your wiki, not in our head.
Infrastructure as code
Terraform / Pulumi / Crossplane manifests for the whole stack. Reproducible, version-controlled, code-reviewed.
Tenant onboarding runbook
How a new tenant gets provisioned, quota-set, attributed, and offboarded. So the next tenant is a four-hour task, not a four-week project.
Eval suite + canary harness
Your evaluation set, the canary slice config, the alert wiring. The thing that lets you upgrade the underlying model without breaking customers.
On-call runbook + alert pack
What each alert means, who responds, when escalation kicks in. Tested on a game day before sign-off.
Cost + capacity dashboard
GPU minutes by tenant, by feature, by model version. The single screen your finance and product teams both trust.
How we engage
Pick the shape that fits your team
Yobitel-hosted
End-to-end on our platform
We architect, deploy, and operate on Yobitel infrastructure. Fastest path to production for teams without an in-house platform function.
Yobitel-engineered, your runtime
We build it for your cloud
We design and deliver into your data centre, hyperscaler account, or hybrid setup. Your operations team owns it after handover, with optional 24/7 day-2 from us.
Collaborative
Pair with your platform team
We bring the architecture, the rougher edges (eval harness, multi-tenant admission, observability spine), and your team owns delivery.
Tell us what you want hosted.
A short questionnaire covers application shape, hosting requirements, and engagement model. Our hosting practice lead replies inside one working day with an architecture sketch and a path to first user traffic.
Same engineering bench across inference, pipelines, network fabric, platform. UK · EU · global sovereignty. Multi-region, multi-tenant ready. Per-tenant cost attribution from day one. Secrets + policy + audit baked in.