LLM Gateway PPT: A Slide-by-Slide Outline That Works

If you're searching for "llm gateway ppt," you're probably preparing a presentation — for an engineering team, a leadership review, or a procurement discussion — and need a clear structure to explain what an LLM gateway is, why it matters, and what to decide. There isn't a single official template, but the good ones follow a predictable pattern: problem, architecture, tradeoffs, decision.

This article gives you that structure directly: a slide-by-slide outline you can build in PowerPoint, Google Slides, or Keynote, plus the talking points and diagrams that make each slide land with a technical or business audience.

Slide 1: Title and framing

Keep it simple: "LLM Gateway: What It Is and Why We Need One." Add a one-line subtitle stating the audience's stake — e.g., "How we're managing API keys, cost, and reliability across three LLM providers."

Slide 2: The problem (before the gateway)

This is the slide that gets buy-in. Show the messy state most teams are in:

• Multiple teams calling Anthropic, OpenAI, or other providers directly
• API keys scattered across repos, CI configs, and .env files
• No shared visibility into spend or usage per team/product
• Provider outages or rate limits breaking production with no fallback
• Inconsistent logging, making incident review painful

A simple "spaghetti diagram" — several app boxes each drawing a separate line to a separate provider box — communicates this faster than bullet points.

Slide 3: What an LLM gateway does

Define it in one sentence: an LLM gateway is a single API layer that sits between your applications and one or more LLM providers, handling authentication, routing, logging, and rate limiting so your apps don't talk to providers directly.

List the core responsibilities:

• Key management — one gateway credential per app instead of raw provider keys
• Routing — send requests to the right model or provider
• Observability — usage, latency, and cost data in one place
• Access control — per-team or per-app permissions and limits
• Resilience — retries, timeouts, and fallback behavior

Slide 4: Architecture diagram

This is the slide people screenshot. Keep it to three layers:

[Your Apps]  -->  [LLM Gateway]  -->  [LLM Provider(s)]
 (web, CLI,        (auth, routing,      (Claude, GPT,
  backend jobs)      logging, limits)    others)

Annotate the middle box with the specific features you're proposing: API key issuance, streaming support, usage metadata, tool-use passthrough. If your org only uses one underlying model (say, Claude through an existing subscription), simplify the right-hand box to one node — this is where a focused option like SubToAPI fits, converting an existing Claude subscription into a standard HTTPS API with app-level keys, streaming, and usage tracking without adding multi-provider routing complexity you may not need yet.

Slide 5: Build vs. buy

This slide is almost always requested by leadership. Structure it as a comparison:

| | Build in-house | Use a managed gateway | |---|---|---| | Time to ship | Weeks to months | Minutes to hours | | Maintenance | Ongoing, your team | Handled by vendor | | Feature scope | Whatever you build | Streaming, keys, tools, teams out of the box | | Cost model | Engineering time + infra | Per-seat or per-plan pricing |

Be honest about the middle ground: many teams start with a thin open-source proxy and later move to a managed product once the maintenance burden becomes visible. Say that out loud rather than pretending it's a clean binary choice.

Slide 6: Security and compliance talking points

Reviewers will ask about this regardless of audience. Cover:

• Where API keys live and how they're rotated
• Whether requests/responses are logged, and for how long
• Team-based access (who can see whose usage and keys)
• Data handling — does the gateway store prompt content, or just metadata?

If you don't have final answers yet, say so on the slide rather than guessing — it's the fastest way to lose credibility with a security reviewer.

Slide 7: Example request/response

Technical audiences want to see the actual shape of the API, not just architecture boxes. A short code block works better than more diagrams:

curl https://api.subtoapi.app/v1/messages \
  -H "Authorization: Bearer $SUBTOAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4",
    "max_tokens": 512,
    "messages": [{"role": "user", "content": "Summarize this ticket."}]
  }'

This grounds the whole presentation: whatever gateway you choose, this is roughly what your developers will type. Point out that the request/response format should be familiar and stable — a gateway that constantly changes its API shape creates as much friction as having none.

Slide 8: Rollout plan

Don't end on architecture — end on a plan. A simple three-step rollout reads well on a slide:

1. Pilot — one team, one app, running through the gateway for two weeks
2. Migrate — move remaining apps off direct provider keys
3. Enforce — revoke direct provider access, gateway becomes the only path

Slide 9: Decision and next steps

Close with a concrete ask: which option you're proposing, what it costs, and what you need approved (budget, security sign-off, a pilot team). If you're evaluating a managed option, note that most offer a free trial, which is worth mentioning here — for example, checking /pricing and /signup before committing to a paid plan lets the pilot team try the actual API before anyone signs a contract.

Design tips for the deck itself

• Use one diagram style throughout — don't mix boxes-and-arrows with flowcharts
• Put code on its own slide with nothing else competing for attention
• Avoid cramming provider logos onto the architecture slide if you're only using one provider — it implies complexity you don't have
• If presenting to a non-technical audience, cut slides 6 and 7 or move them to an appendix

FAQ

Is there an official "LLM gateway" PowerPoint template? No single official template exists — LLM gateways are a category, not a product with a standard deck. The outline above (problem, architecture, build-vs-buy, security, rollout) covers what most technical and leadership audiences expect to see.

How many slides does an LLM gateway presentation need? Eight to ten slides is typical for an internal proposal: one problem slide, one architecture slide, one comparison table, one security slide, one code example, and a closing decision slide. Longer decks tend to lose the room before reaching the ask.

Should the presentation cover multiple providers or just one? Match the deck to your actual setup. If your team only uses Claude, a single-provider architecture slide is more credible than a multi-provider diagram you don't need — see /docs/quickstart for what a single-provider gateway request looks like in practice.