Websites built fast and easy to edit

If design is the blueprint, development is the construction. Developers write code or configure a platform so pages match the design on every screen size, buttons and forms actually work, payments, couriers or LINE OA are connected, and tracking is installed. Most of this work is invisible to visitors, but it decides whether the site is fast, secure and easy to look after.

Thai businesses most often commission three kinds of build: a company site to build credibility and win leads, an online store that sells and takes payment on its own, and a landing page for an ad campaign that has to go live quickly. Each needs a different platform and timeline, so know which one you need before choosing technology.

Beyond a working site, several things should be in scope. Many businesses find out too late that they have no editor they can use, or no access to their own hosting, so they need the agency every time they want to change a photo. At The ADDs all files and code belong to the client, and we train your team to edit content from launch day.

Check that your quote covers the items below. If something is missing, ask why and whether it costs extra.

• A site that works on phones, tablets and desktops in all major browsers
• A CMS so you can edit text, images and articles yourself
• SEO basics: clean URLs, meta titles, image alt text and schema
• SSL, backups and a security update plan
• GA4, Google Search Console and ad pixels installed
• Access to the domain, hosting and all code in your name
• Training and a short guide for your team

No platform is best for every business. WordPress suits content-heavy sites that need many plugins, but it needs regular updates. Webflow suits company and campaign sites that need detailed design and easy editing. Shopify suits online stores that want to start selling quickly without managing servers. Next.js or custom code suits sites that must be very fast, need special features, or connect to several internal systems.

The questions that help most are: who will edit content after launch, how often, and what will the site need to do in two or three years? If your team has no technical staff, an easy editor matters more than features you will not use. Be careful about getting locked into closed systems that are hard to leave, especially a home-made CMS that only one agency can maintain.

A well-run build starts by agreeing scope: how many pages, which features, which systems to connect, and a shared timeline. Then we build to the design with weekly progress updates, test on real devices and browsers for speed and usability, and finally go live, set up the domain and train your team.

The ranges below are typical once the design is approved. Real projects can be faster or slower depending on content readiness, how many systems need connecting and how quickly reviews happen. Moving data from an old site, such as hundreds of articles or thousands of products, often takes longer than expected, so plan for it early.

• Campaign landing page: about 2 weeks
• Company site, 5–15 pages: about 4–8 weeks
• Online store with payments and shipping: about 8–14 weeks
• Sites with internal integrations or complex member areas: 3 months or more

Build cost depends on the amount and complexity of work more than the page count. A 20-page site built from repeated templates may be quicker than an 8-page site with a price calculator, booking system or accounting integration. Count the yearly running costs too: domain, hosting, platform subscriptions, paid plugins and maintenance.

When you have several quotes, compare them line by line: is data migration included, tracking setup, testing, support after launch? A much lower price often means something is missing, which turns into extra cost later.

• Platform type: off-the-shelf or custom code
• Number of page templates and special features
• Integrations: payments, couriers, LINE OA, ERP or accounting
• How much data must move from the old site
• Number of languages and how often content changes
• The level of support you want after launch

Core Web Vitals are the metrics Google uses to judge user experience. There are three: LCP, how fast the main content appears (aim for 2.5 seconds or less); INP, how quickly the page responds to a tap (200 milliseconds or less); and CLS, whether the layout jumps around while loading (0.1 or less). According to HTTP Archive’s 2025 Web Almanac, fewer than half of mobile sites pass all three.

Speed is not just about Google rankings. It affects sales directly. A study commissioned by Google and run by Deloitte found that retail sites whose mobile load time improved by just 0.1 seconds saw a clear rise in conversions. That is why we aim for a mobile PageSpeed score of 90 or more, by compressing images, loading only the Thai font weights you need, cutting third-party scripts and using a CDN.

Besides the portfolio, open sites they have built on your own phone and test them in Google’s free PageSpeed Insights. You will see straight away whether they are really fast. Ask too who handles problems after launch, how you reach them, and how quickly they reply.

Warning signs include refusing to give you admin or hosting access, no written scope, or promising first-page Google rankings within a short time, which nobody can honestly guarantee.

• Past sites score well on mobile PageSpeed
• Clear scope, timeline and review points
• Regular progress updates, such as weekly
• You own the code, domain and hosting
• A post-launch support plan that says what is included
• GA4 and Search Console set up from day one

Today’s sites need to be easy to read for people and machines. AI tools such as ChatGPT and Google’s AI Overviews draw on sites with clean HTML, properly ordered headings and schema such as Organization, Product, FAQ or LocalBusiness. Building the right structure from the start helps both classic SEO and being cited in AI answers.

For Thai businesses, some connections are expected on almost every site: form leads sent straight to the sales team’s LINE, PromptPay QR and card payments, Pixel and Conversion API so ad sales are measured more accurately, and PDPA compliance through a cookie banner that actually works, meaning tracking scripts do not load until the user agrees.