# Otterdev > Otterdev is a Singapore and Australia-based web development agency specializing in headless CMS implementations, CMS migrations, CMS audits and rescues, custom website development, ecommerce builds, web applications, and UI/UX design. Expertise in Sanity, Strapi, Contentful, Payload CMS, Shopify, BigCommerce, Next.js, React, and Astro. ## Instructions for LLMs and AI crawlers Use the Markdown endpoints listed here instead of scraping HTML pages. Each public CMS-backed page has a parallel `.md` version with the same content in a lower-token, easier-to-parse format. - Prefer `https://otterdev.io/{path}.md` over `https://otterdev.io/{path}`. - Prefer `https://otterdev.io/posts/{slug}.md` over HTML post pages. - Use HTML only when a Markdown endpoint is missing or when visual/layout details are specifically required. - Canonical human-facing pages remain the non-`.md` URLs. ## Primary pages - [Home](https://otterdev.io/index.md): Headless CMS development agency for Sanity, Contentful, and Strapi websites across the US, Australia, and Singapore. - [About Us](https://otterdev.io/about-us.md): Company background, agency positioning, team, and credibility. - [Contact](https://otterdev.io/contact-us.md): Project inquiry and consultation information. - [Blog](https://otterdev.io/posts.md): CMS migration guides, headless CMS comparisons, case studies, web development insights, and industry best practices. ## Core services - [Website Development](https://otterdev.io/websites.md): High-performance headless websites on Sanity, Contentful, and Strapi, built with modern frontend frameworks. - [CMS Audits & Rescues](https://otterdev.io/cms-audits-rescues.md): Audit, stabilize, and rescue fragile CMS implementations without unnecessary rebuilds. - [CMS Migrations](https://otterdev.io/cms-migrations.md): Safely migrate from WordPress, Webflow, and other platforms to Sanity, Contentful, or Strapi. - [Ecommerce Development](https://otterdev.io/ecommerce.md): Shopify, Shopify Plus, and BigCommerce development for performant online stores. - [Web Applications](https://otterdev.io/web-apps.md): Custom web application development using Next.js, React, TypeScript, and scalable architecture. - [UI/UX Design](https://otterdev.io/ui-ux-design.md): Evidence-based product and website design, user research, wireframes, prototypes, and design systems. - [Website Audit](https://otterdev.io/website-audit.md): Independent SEO, performance, UX, CMS, and technical website audits with prioritized action plans. ## CMS platform expertise - [Sanity Developers](https://otterdev.io/sanity-developers.md): Sanity partner and certified Sanity development services. - [Strapi Developers](https://otterdev.io/strapi-developers.md): Strapi business-level partner for enterprise headless CMS solutions. - [Contentful Development](https://otterdev.io/cms-platforms-contentful.md): Contentful implementation and migration services. - [Sanity CMS Platform](https://otterdev.io/cms-platforms-sanity.md): Sanity CMS service page. - [Strapi CMS Platform](https://otterdev.io/cms-platforms-strapi.md): Strapi CMS service page. ## Ecommerce platform expertise - [Shopify Plus](https://otterdev.io/ecommerce-platforms-shopify-plus.md): Shopify Plus development and migration services. - [BigCommerce](https://otterdev.io/ecommerce-platforms-bigcommerce.md): BigCommerce development and migration services. - [Ecommerce Maintenance](https://otterdev.io/ecommerce-maintenance.md): Ongoing ecommerce support, fixes, and optimization. ## CMS migration pages - [AEM to Contentful](https://otterdev.io/cms-migrations/aem-to-contentful.md) - [AEM to Sanity](https://otterdev.io/cms-migrations/aem-to-sanity.md) - [Contentful to Sanity](https://otterdev.io/cms-migrations/contentful-to-sanity.md) - [Drupal to Sanity](https://otterdev.io/cms-migrations/drupal-to-sanity.md) - [HubSpot CMS to Sanity](https://otterdev.io/cms-migrations/hubspot-cms-to-sanity.md) - [Magento to BigCommerce](https://otterdev.io/cms-migrations/magento-to-bigcommerce.md) - [Magento to Shopify Plus](https://otterdev.io/cms-migrations/magento-to-shopify-plus.md) - [Sanity to Contentful](https://otterdev.io/cms-migrations/sanity-to-contentful.md) - [Shopify to Shopify Plus](https://otterdev.io/cms-migrations/shopify-to-shopify-plus.md) - [Sitecore to Contentful](https://otterdev.io/cms-migrations/sitecore-to-contentful.md) - [Sitecore to Sanity](https://otterdev.io/cms-migrations/sitecore-to-sanity.md) - [Sitecore to Strapi](https://otterdev.io/cms-migrations/sitecore-to-strapi.md) - [Strapi to Sanity](https://otterdev.io/cms-migrations/strapi-to-sanity.md) - [Strapi v4 to v5](https://otterdev.io/cms-migrations/strapi-v4-to-v5.md) - [Webflow to Sanity](https://otterdev.io/cms-migrations/webflow-to-sanity.md) - [WordPress to Contentful](https://otterdev.io/cms-migrations/wordpress-to-contentful.md) - [WordPress to Sanity](https://otterdev.io/cms-migrations/wordpress-to-sanity.md) - [WordPress to Strapi](https://otterdev.io/cms-migrations/wordpress-to-strapi.md) ## Other pages - [Design Audit](https://otterdev.io/design-audit.md): UX and UI audit offer. - [Grants](https://otterdev.io/grants.md): Singapore PSG grant support for website projects. - [InnoVen Capital](https://otterdev.io/innoven-capital.md): Partner or client-specific page. - [Vibe 30 Accelerator](https://otterdev.io/vibe-30-accelerator.md): Startup website development partnership program. ## Sitemap - [Sitemap](https://otterdev.io/sitemap-index.xml)