# [Field guides to AI search optimization](https://rebilder.com/learn)

| Title | Note | Updated |
| --- | --- | --- |
| [AI search optimization: the definitive guide](https://rebilder.com/learn/ai-search-optimization) | AI search optimization end to end: how assistants actually retrieve pages, the four levers you control, measured before/after numbers, and how to track it. | 2026-09-10 |
| [Answer engine optimization: how to be the source of the answer](https://rebilder.com/learn/answer-engine-optimization) | Improve answers about your business with useful content, current sources, accessible pages and a repeatable measurement workflow. | 2026-09-10 |
| [GEO vs SEO: what actually changes, and what does not](https://rebilder.com/learn/geo-vs-seo) | Compare GEO and SEO by customer questions, shared content work, retrieval paths and the evidence needed to measure each surface. | 2026-09-10 |
| [AI visibility tools: how to choose one that measures something](https://rebilder.com/learn/ai-visibility-tools) | Compare AI visibility tools by their evidence, workflow and value: answer monitoring, content improvement, retrieval checks and reporting. | 2026-09-10 |
| [LLM SEO: what transfers from SEO, and what does not](https://rebilder.com/learn/llm-seo) | A practical LLM SEO audit: customer questions, source quality, response checks, useful client deliverables and ongoing measurement. | 2026-09-10 |
| [llms.txt: what it is, how to write one, and whether it works](https://rebilder.com/learn/llms-txt) | Learn what to put in llms.txt, where to publish it and how to maintain useful links and guidance alongside your business website. | 2026-09-10 |
| [What is agentic commerce?](https://rebilder.com/learn/what-is-agentic-commerce) | What agentic commerce means for buyers and businesses: information, authority, supported operations and practical steps to prepare. | 2026-09-10 |
| [AI shopping agents: what they are and how they read your store](https://rebilder.com/learn/ai-shopping-agents) | What AI shopping agents are, how ChatGPT, Claude, and Perplexity fetch and compare product pages, and how to see agent traffic on your own store. | 2026-09-10 |
| [How to get recommended by ChatGPT: a merchant’s guide](https://rebilder.com/learn/get-recommended-by-chatgpt) | Make your buying information easy to retrieve, extract and verify. Measure agent requests and referrals to see the results on your own site. | 2026-09-10 |
| [Answer engine optimization tools: a 2026 buyer’s guide](https://rebilder.com/learn/answer-engine-optimization-tools) | A 2026 buyer’s guide to answer engine optimization tools by category: visibility trackers, content optimizers, and serving-layer infrastructure. | 2026-09-10 |
| [AI agent user agents: a field guide to request identification](https://rebilder.com/learn/ai-agent-user-agents) | Real AI agent user agent strings (ChatGPT-User, GPTBot, claude-code, PerplexityBot), the exact headers each one sends, and how to detect them properly. | 2026-09-10 |
| [Shopify agentic commerce: a practical readiness guide](https://rebilder.com/learn/shopify-agentic-commerce) | Prepare Shopify product data for agents, configure the Rebilder app-proxy adapter and verify the responses and supported operations. | 2026-09-10 |
| [The agentic commerce protocol landscape: ACP, UCP, and MCP](https://rebilder.com/learn/agentic-commerce-protocol) | ACP, UCP, and MCP explained: what each agentic commerce protocol covers, how the integrations fit together, and how merchants can prepare. | 2026-09-10 |