Whatever your activity, and the CMS you will have chosen to develop your sales on the Internet, the e-commerce agency and yourself, must be vigilant on some other aspects.
Mastering acquisition levers, multimedia content, campaign management, product personalization, etc. and many other aspects will be taken into account.
Unless you choose a CMS like Shopify, which de facto hosts its own solution, for other CMS, you will have to choose your host.
In any case, choose a host capable of securing and creating regular backups of your website and its content...
Depending on the size of your site and the desired response time, you should also choose a specific hosting mode (shared for small sites, own for very large sites in order not to affect the performance of your site).
Theoretically predefined, the purchase path of some templates will not be as efficient as others.
Choose templates with the shortest possible number of clicks between the product page and the payment.
The longer your buying journey, the more you risk losing users along the way (and therefore sales).
A window that is not found, however beautiful it may be, will not generate any sales. Especially in E-Commerce, where the field of possibility is potentially global.
Optimizing the writing of product sheets for SEO purposes is also key.
Too many product sheets of the main E-commerce sites are weak...
Look at Amazon's product sheets... and you'll see the importance of the copywriting around the product sheet itself.
This is a big starting question that should be asked... Because many aspects have to be taken into account. Especially logistic, language, currency, etc.
Nowadays, brand strategy must necessarily take into account the E-Reputation aspect.
Specific platforms are dedicated to E-Commerce, and to consumer product reviews (Avis Vérifiés, Trusted Shop, TrustPilot...).
Turning prospects into customers... but at what cost and ROI?
More than anywhere else, E-Commerce sites have an absolute need to track sales performance vs. Google Ads or Social Ads investments.
Not to be overlooked in E-Commerce, as websites are "alive" and must constantly evolve.
Range management, promotion management, but also incentives and online competitions.
E-Commerce TMA hours are an absolute must when creating a site.