Instant payment ptccông việc
Xin chào, Chúng tôi cần phát triển tính năng Instant Message trên nền web cho dự án trang mạng xã hội với Cometchat Pro và Buddyboss. Có thể tích hợp vào Notification và Inbox có sẵn của Buddyboss. Chức năng tương tự bản plugin Cometchat Go dành cho Wordpress.
landing page
...Photoshop cho Petite Monkey Shop – chuyên cung cấp tranh tô màu và các design dành cho thiếu nhi dựa theo các bộ phim hoạt hình nổi tiếng. Các bạn check link của shop để hình dung các sản phẩm bạn sẽ thực hiện. Mô tả công việc: Shop sẽ cung cấp cho bạn 4 file PDF đối với mỗi phim hoạt hình. Nhiệm vụ của bạn là dùng 4 file PDF đó để thiết kế 3 folders: 1 folder Instant - tranh tô màu có sẵn (gồm 4 hình), và 2 folders Personalized - tranh tô màu có ghi chữ (mỗi folder 2 hình). Mỗi folder gồm: 1) tranh tô màu, 2) file PTS và 3) mockup. Xem tiêu chuẩn file ở file đính ...
Fix signature request issue at the payment gateway only. Flutter app
...e-commerce site to offer a seamless shopping experience. The main focus is ensuring that the shipping and payment functionalities are fully operational. Key Requirements: - Configuring various shipping options: I'm looking to offer free shipping, flat rate shipping, and real-time carrier rates. It's essential that all these options are correctly set up and functioning as expected. - Integrating multiple payment gateways: The site should accept payments through PayPal, Stripe PayU, and credit cards. This requires the integration of these gateways, ensuring that transactions are secure and efficient. There are two companies, one in Turkey and one in Dubai. We would like to able to receive payment to both company. Ideal Candidate: I'm seeking someone ...
...developer to design and construct a bespoke payment processing plugin for my web-based application. Currently embarking on a new venture, I aim to digitize and streamline our cclient invoice handling. At present, we manually track payments received via email transfer, a process that lacks efficiency and oversight. The envisioned solution would automate payment registration directly within our customized content management system. Key requirements include capturing customer remittance details, associating funds with open invoices, updating balances and status in real-time. Built with extensibility and scalability in mind, the plugin must integrate seamlessly into our PHP-based platform. I'll bring considerable insight into recurring billing cycles and payment ...
I have a server and Wildfire's open-source instant messaging code. I'm looking for a skilled developer to create a custom APK and/or APP based on the source code. The main requirements are: - Development for Android platform - Core feature: Instant Messaging - Additional feature: Voice and Video Call support The project is time-sensitive; therefore, prompt delivery is a crucial factor. Prior experience with similar project development is a plus. Ideal candidates will have a strong grasp of instant messaging protocols and security measures, and a proven track record with voice and video call integrations within such apps. A creative mindset to add a unique touch to the app is also highly appreciated. Please get in touch if you have the skills and availabilit...
I am in need of a skilled software developer to create a unique payment distribution system for my business. The platform should allow for seamless financial transactions, fulfilling a number of functions such as: - Receiving payments from our member clients via bank transfers or credit card. - Sending fixed-rate commission payments directly to my sales team. - Allocating remaining profits equally between me and my three business partnerships. Users should be able to interact with an intuitive, easy-to-use interface. Ideal candidates will have experience with: - Financial software development. - Creating user-friendly interfaces. - Understanding of bank transfers and commission-based payment structures. A strong background in financial management systems would be highly ...
I'm looking for a skilled developer to implement a freemium model and payment options for my LLM (Library Management System) app. Key Requirements: - Implement an ad-supported experience for the freemium version of the app. - Integrate Credit/Debit Card as the main payment option for users to access premium features. - Implement a detailed user activity tracking system to provide personalized content recommendations. Ideal Skills: - Experience with freemium models and ad integration. - Strong background in user tracking and analytics for personalized content recommendations. - Familiarity with LLM systems would be a plus, but not mandatory. I'm looking for a proactive and experienced developer who can efficiently deliver these requirements, ensuring a seamless us...
I'm looking for a skilled virtual assistant to provide support ...databases. - Administrative Support: Assisting with various office tasks and projects. - Customer Support: Handling customer service inquiries and providing assistance. - Virtual Assistance: Supporting me in various administrative tasks as required. I anticipate needing around 10-20 hours of support per week. Communication will be key, so the ideal candidate should be comfortable using email and instant messaging apps for updates, questions, and task delegations. Key skills: - Proficiency in data entry and administrative tasks. - Excellent communication skills. - Prior experience in customer support. - Adept at using various virtual assistance tools. Looking forward to working with a proactive and professio...
Key Objectives: ** Website Redesign: - Retain existing content but update the design to be more modern and user-friendly. -Ensure the redesigned site is responsive and optimized for all devices. ** Form and Functionality Fixes: - Fix the current issues with the instant quote form to ensure accurate rate calculation and smooth functionality. - Incorporate Google Maps powered dropdown suggestions for city and state inputs to enhance user experience. ** SEO and Security Setup: - Implement comprehensive SEO strategies to improve organic search visibility and ranking. - Set up SSL through GoDaddy to ensure the website is secure and trusted by visitors. ** Database Management: - Integrate Google Sheets with the MySQL database so that the rates can be updated weekly via Google...
I'm seeking an experienced developer to create a real-time app tailored for both mobile (iOS and Android) and web platf...experienced developer to create a real-time app tailored for both mobile (iOS and Android) and web platforms. Key features should include: - Real-time chat and video call capabilities - Fully integrated payment system The payment integration should encompass: - A smooth in-app purchase experience for users Ideal skills for this job include: - Expertise in iOS and Android development - Proficiency in real-time functionalities - Proven experience in integrating a chat/videocall feature - Solid knowledge of in-app payment systems. This project is based on a revenue share model. Instead of a fixed payment, we offer a 10% share of th...
I'm seeking a PyTorch specialist who can assist me with a few facets of my deep learning project. Key Responsibilities: - ...Training and Evaluation: Aid me in efficiently training and evaluating my models. - Debugging and Error Handling: Help me in identifying and resolving code issues. Communication: - For code reviews and questions, we'll communicate through an instant messaging app. Ideal Freelancer: - Proficiency in PyTorch and deep learning model building. - Strong understanding of data preprocessing techniques and training methodologies. - Experienced in debugging code and handling errors. - Excellent communication skills for conveying feedback and solutions clearly over instant messaging. If you have a strong background in these areas, I'd love t...
...specialist to create a 90-second explainer video for a groundbreaking African payment solution. Key Requirements: - Animated characters: I'd like this video to employ engaging, relatable characters to help convey the message effectively. - African cultural references: The video should incorporate cultural elements to resonate with the audience and demonstrate the solution's roots and relevance. Target Audience: The video is intended for the general public, so the specialist should be able to create content that is both entertaining and informative for a broad audience. Ideal Skills and Experience: - Proficiency in 3D animation - Experience in creating explainer videos - Knowledge of African cultures and payment solutions is a plus. I'm seeking someone...
Hi, We need a creative scriptwriter with a great sense of humor and knowledge of jokes and meme trends. I need many scripts related to the animal niche. I will ask for a 100 -150 word sample on the topic given by me. It's a long term task we need 8 scripts of 2000 words per week. We will hire multiple writers for this task....scripts related to the animal niche. I will ask for a 100 -150 word sample on the topic given by me. It's a long term task we need 8 scripts of 2000 words per week. We will hire multiple writers for this task. Have you had experience writing for a YouTube channel before? If so, we would love to see the links to your work. Additionally, please share some sample scripts that you have written. Payment will be via escrow. Interested candidate pleas...
Hi, We need a creative scriptwriter with a great sense of humor and knowledge of jokes and meme trends. I need many scripts related to the animal niche. I will ask for a 100 -150 word sample on the topic given by me. It's a long term task we need 8 scripts of 2000 words per week. We will hire multiple writers for this task....scripts related to the animal niche. I will ask for a 100 -150 word sample on the topic given by me. It's a long term task we need 8 scripts of 2000 words per week. We will hire multiple writers for this task. Have you had experience writing for a YouTube channel before? If so, we would love to see the links to your work. Additionally, please share some sample scripts that you have written. Payment will be via escrow. Interested candidate pleas...
I'm in need of a website that can cater to new users and make scheduling appointments, managing user profiles, and processing payments an easy and seamless experience. Please go through figma file for detailed flow and screens of web needed. You can select react.js or any platform that will be easier for you.
Hi Masum Ali G., I noticed your profile and would like to offer you my project. We can discuss any details over chat.
Hi, We need a creative scriptwriter with a great sense of humor and knowledge of jokes and meme trends. I need many scripts related to the animal niche. I will ask for a 100 -150 word sample on the topic given by me. It's a long term task we need 8 scripts of 2000 words per week. We will hire multiple writers for this task....scripts related to the animal niche. I will ask for a 100 -150 word sample on the topic given by me. It's a long term task we need 8 scripts of 2000 words per week. We will hire multiple writers for this task. Have you had experience writing for a YouTube channel before? If so, we would love to see the links to your work. Additionally, please share some sample scripts that you have written. Payment will be via escrow. Interested candidate pleas...
I'm in need of an experienced virtual assistant with capabilities far beyond basic administrative tasks. The right individual will offer support that spans...C-level executives - Strong organizational skills, with the ability to manage multiple tasks simultaneously - Excellent communication and interpersonal skills, to effectively liaise with team members and clients - Capability to work independently, in accordance with full access to confidential information - Proficiency in the usage of various communication channels including email, phone calls, and instant messaging/chat platforms The right freelancer for this role will be a proactive individual, capable of not only executing tasks but also suggesting improvements and strategies to facilitate more efficient and effective ...
I'm in need of a highly efficient roll forging solution, specific to small components. This solution should aim to: - High-level product quality - Minimise material waste - Have FEA abilities Special features I am seeking in this solution include: - Real-time monitoring capabilities for instant tracking and oversight - Remote control functionality for convenience and efficiency - Automated adjustment settings to maintain optimal operation I am primarily dealing with small components. Hence, an ideal candidate for this project would be someone with prior experience and a deep understanding of developing solutions for small component roll forging. Knowledge of FEA is a must. Looking forward to a seamless cooperation that will deliver an exceptional output.
...different look though, along with my own logos. The perspective customer will be able to select from a list of appliances from each product - a fridge or an oven for example type in age of product and be able to receive an instant quote. I am looking for the product to then be purchasable following that quotation following a sign up process and agreement to terms and conditions. Customer will then automatically be sent an email welcoming them to the product and will include policy details. I will need functionality to bill customers monthly using card payment and to include a cancel anytime option. I absolutely need free-flow access to the site and the ability to make frequent changes. Therefore upon completion I will be looking to employ the designer for regu...
I'm seeking a developer to create a comprehensive members' social media software. This software should be responsive and functional across both web and mobile platforms. Key Functionalities: -Instant messaging: Members should be able to privately communicate with one another. -Photo and video sharing: A core function should include the sharing and commenting of multimedia content. -Blogging and forums: Members must have the ability to write posts and create threads for discussions. The platform should optimally support a user base of 1,000 to 5,000 members. Applicants should have a robust background in social media software development and be experienced in implementing the functionalities listed above. An understanding of scalability will be crucial for this project.
...a competent developer to incorporate bank transfer as a payment method on my existing website. Currently, my site only supports PayPal and I want to add another layer of customer convenience by allowing bank transfers. I need to be able to sell theater tickets, so an interactive sitting map should be available. While I haven’t decided yet on a specific bank or service for processing these transactions, I am open to suggestions. If you have prior experience with multiple processors, that would be a significant advantage. Ideal skills and experience: - Proven background in E-commerce website development - Knowledge of various payment processors - Understanding of safe and secure payment gateways - Ability to integrate new payment methods without dis...
I'm looking for a skilled freelancer who can help automate various tasks in Excel. This includes, but is not limited to, data entry, formulas, and calculations. Key responsibilities: - Automating data entry processes within Excel - Implementing advanced formulas and calculations to streamline calculations - Gene...tasks in Excel - Advanced knowledge of Excel functions and formulas - Ability to understand complex data sets and create accurate reports In your application, I'd like to see: - Examples of similar projects you've worked on - Details of your experience with Excel automation - A detailed project proposal including your approach to this specific project Communication: I prefer to communicate via instant messaging, so please ensure you're comfortable wi...
I am looking for an experienced and reliable PHP developer to integrate a new payment provider (CCBill) into our existing ecosystem. This system includes various APIs built with PHP 7.4, Symfony and MySQL. Requirements: - Extensive experience with PHP, specifically PHP 7.4 - Familiarity with integrating payment providers - Experience working with Symfony framework - Experience with MySQL databases - Familiarity with complex API ecosystems - Reliability and professionalism Project Details: - Scope: Integrate a new payment provider into our existing system, ensuring seamless functionality - Timeline: Expected duration and deadline can be discussed - Communication: Regular updates via preferred communication channels (email, zoom or skype) Budget: To be discu...
I am s...e-commerce site development. Your prior experience with creating such platforms, particularly with a product range exceeding 100 items, will be highly beneficial. - Payment Gateway Integration: The website should allow customers to pay via credit card and PayPal. Your proficiency in integrating these payment methods securely and seamlessly is essential. - Customizable Design: While I have a vision for the website's aesthetics, I'm open to suggestions. Your ability to design a visually appealing, user-friendly interface will be a significant advantage. In your proposal, kindly highlight your previous e-commerce projects, payment gateway integration experience, and share any design work you've done. Additionally, please provide an estimated timel...
I am looking for a software designer who can help me build a payment processing company similar to VISA INC, while ensuring that the company complies with all relevant laws and regulations in North America. Key Requirements: - I want the company to focus on payment processing. - The software must include a mobile-friendly design to cater to the increasing mobile transaction trend. - The payment gateway should be integrated into the system to provide a seamless, secure transaction experience. - An inventory management system is also crucial for our operations. Ideal Skills and Experience: - Proven experience in designing and developing payment processing systems. - In-depth knowledge and understanding of North American regulations and compliance requirements. -...
...integrating various payment options. It is preferable to build the store using existing templates for efficiency and consistency. Project Requirements: Platform: Wix or Squarespace (please specify your expertise). Design: Customizable, responsive design tailored to our brand and product offerings, preferably using existing templates. Features: - Product catalog with categories and filters. - Stock availability & releases. - Secure user registration and login. - Shopping cart and checkout process. - Integration of payment gateways (e.g., Tabby, bank APIs). - SSL certification for secure transactions. - Shipping address collection. - Client database for storing customer information. Payment Integration: - Must integrate Tabby for installment payments. - Shoul...
...set up a payment portal on the Radix network that caters to individual users. This portal is specifically meant to facilitate instant payments through cryptocurrency. Key Requirements: - **Radix Network Integration**: You should be familiar with the Radix network and have experience in setting up payment systems on it. - **Cryptocurrency Integration**: The payment gateway should support any cryptocurrencies on the Radix network. - **User-Friendly Design**: The portal should be intuitive and easy to navigate for individual users. - **Instant Payment Processing**: The primary goal for this portal is to facilitate quick payments, so a fast and reliable payment processing system is essential. Ideal Skills: - Experience with Radix network - ...
We're seeking a talented Python/Django developer and a skilled frontend developer to collaborate on an exciting new web payment application project. Python Developer Tasks: - Django Development: The project will involve extensive Django work, including back-end architecture, database setup, and custom feature development. - Database Management: You'll be responsible for creating efficient database structures and maintaining data integrity. - API Integration: The application will interface with external systems through APIs. Your role will involve seamless integration. Frontend Developer Tasks: - JavaScript Development: Your JavaScript expertise will be crucial in building interactive and responsive user interfaces. - React Development: You will be working with React to ...
...in need of a professional Magento 2 developer to finalize a payment module for my e-commerce store. The module is intended to provide the following key functionalities: - Payment processing: The module should be able to effectively process payments for products purchased on the site. - Seamless checkout experience: I'm looking to ensure a smooth and hassle-free checkout experience for my customers. - Support for multiple payment gateways: The module should particularly include TakePayments, but also be adaptable to integrate with other gateways in the future. The ideal candidate for this project should have: - Proven experience and expertise in Magento 2 development - Previous experience with implementing and customizing payment modules - A strong tra...
...scale as my business grows. Key Features: - E-commerce Focus: The primary goal of this project is to create a fully functional e-commerce platform. - Payment Integration: I'm looking to integrate credit card and cryptocurrency payment options. These should be secure, reliable, and user-friendly. - Scalability: The website should be designed to accommodate a growing product base. Although the exact number of products isn't defined, the website should be built with the potential for a large inventory. Ideal Skills and Experience: - Proven track record in building e-commerce websites, preferably with scalable features. - Strong experience in payment gateway integration, particularly with credit cards and cryptocurrencies. - Understanding of user experience...
I want to Rank Keywords at the 1st Position of the Google Search and payment will be done after ranking the keywords at 1st position of the google search only otherwise no payment will be made. Weekly and monthly backlinks creation and work done report is mandatory. Keyword : Target URL 1) bharatiya nyaya sanhita 2023 pdf: 2) bharatiya nyaya sanhita pdf: 3) section 69 bns: 4) bns section 69: 5) bns 352:
I'm in urgent need of a Magento 2 developer to address a critical issue with my website's payment gateway. Key Requirements: - The current payment gateway, Razorpay and Payu, is not functioning correctly. I need a professional who can quickly identify and resolve the root cause of this issue. - The selected candidate must have prior experience working with Magento 2 and integrating payment gateways. - Familiarity with Razorpay's API would be a huge plus, as I've already integrated it into the site. The ideal candidate will be someone who can work efficiently, has a thorough understanding of Magento 2, and can troubleshoot and resolve issues with payment gateways. Note : Payment will be release on successful task completion. and I...
...handling basic bookkeeping. - Conducting Research: I need someone who can gather information for me on topics that I provide. - Assisting with Customer Support: You will need to handle customer inquiries and provide basic support. Communication is key for this role, so I need someone who is comfortable with various communication channels. I expect you to be responsive to emails, phone calls, and instant messages. Ideal Skills and Experience: - Proven experience as a virtual assistant or in a relevant role - Excellent organizational and time management skills - Strong communication skills, both written and verbal - Proficient in using Microsoft Office and Google Suite - Ability to handle customer inquiries and provide basic support Please apply if you have a part-time availabil...
I'm in need of a skilled developer who can integrate Stripe payment into our current CRM system, which has an open API. The main function of the integration will be to track payments. Key Responsibilities: - Integrate Stripe payment system into our CRM - Ensure seamless payment tracking functionality - Testing the integration to ensure it's functioning correctly - Provide documentation on how to use the integration Ideal Skills and Experience: - Proficient in using Stripe APIs - Experienced in integrating payment systems into existing systems - Familiar with CRM systems and how they interact with external APIs - Strong problem-solving skills and attention to detail If you possess these skills and have prior experience in similar projects, I'd l...
...looking to integrate a bank transfer payment method into my website to facilitate online purchases. Key Requirements: - **Payment Gateway Integration**: A seamless incorporation of a payment gateway is essential. The system should be able to securely process bank transfers from customers on the website. - **Single Currency Support**: The payment system should only be set up to manage transactions in a single currency. Ideal Skills and Experience: - **API Payment Integration**: Prior experience in integrating payment APIs, particularly those for bank transfers, is crucial. - **E-commerce Development**: A strong background in e-commerce development and understanding of online purchase flows. - **Security**: Knowledge of how to implement secure...
I'm seeking a professional who can conduct a series of payment tests on our website. We are currently integrated with payment gateway but are specifically interested in Korea. Key tasks include: - Testing successful payment transactions with Nuvei - Testing refund transactions Ideal candidates should have: - Proven expertise with Nuvei payment gateway - Strong knowledge of Korean payment infrastructure - Experience in conducting payment gateway tests - Proficient understanding of e-commerce platforms and transaction processing - Comfortable with using card to do payments Your thorough and meticulous approach can help us ensure seamless and error-free payment processes for our Korean users. We will pay upfront.
I'm looking for a seasoned product owner to help me manage the development and improvement of our existing product. Key Responsibilities: - Oversee the development of a new product feature, e...product management and development, ideally in a tech or software environment. - Strong background in Agile and Waterfall methodologies, and the ability to merge them into a successful Hybrid approach. - Excellent communication skills, particularly over instant messaging. - A proactive, problem-solving attitude and a keen eye for detail. - Languages: English: fluent, French: good If you have experience in managing product development, especially in a Hybrid methodology, and are willing to communicate through instant messaging, I'd love to discus...
We urgently need a developer to create a step by step form for car rental using WooCommerce and to integrate with it Up2pay e-transactions woocommerce payment gateway
I'm seeking an experienced app developer to create a business mobile application that's compatible with both iOS and Android platforms. Key Features Required: - Integration with a payment system to facilitate transactions within the app. Ideal Candidate Skills: - Strong cross-platform development experience (iOS and Android). - Proven track record in integrating payment systems in apps. - Familiar with creating robust, secure financial transaction systems. - Solid understanding of UI/UX for business apps on both platforms. Please include examples of business apps with payment integration you've previously developed in your proposal. Thanks!
I am looking for a skilled developer to create a user-friendly desktop application interface that integrates a machine learning model. The primary goal of this application will be to evaluate student applications in real-time. Key Features: - Real-time evaluation feedback: The application should provide instant feedback on student applications, based on the integrated machine learning model. - User authentication: The application should include a secure user authentication system to ensure only authorized users can access and use it. - Data visualization: The application should have data visualization capabilities to help users understand the evaluation process and results better. Integration: - The application will need to integrate with existing systems or databases. The specif...
I need an expert in Shopify to assist and guide me through customizing my stor...significant changes to the store design and layout. - Adding products and categories: You'll be responsible for adding and organizing a large number of products and categories. - Setting up payment and shipping: Ensure a seamless, user-friendly experience for our customers. Communication: - I prefer communication through Skype calls. This allows for more instant feedback and immediate resolution of queries. Ideal skills and experience: - Proven track record with significant customizations on Shopify stores. - Excellent communication skills, especially through Skype. - Proficient in setting up payment gateways and shipping options. - Familiarity with managing large product inventori...
I'm seeking a freelancer to develop a cutting-edge system that will automate payments through the PayPal system. Key Requirements: - The system should completely automate the payment process without any manual intervention. - The integration with the PayPal API is a key requirement, so experience working with this API is crucial. Your main task will be to set up the system to facilitate automated payments by integrating it with the PayPal API. Ideal Skills: - Proficiency in PayPal API. - Prior experience in payment automation development. Experience in creating secure and reliable automated payment systems is a major plus. If you have a track record of developing similar systems in the past, that would be very beneficial.
I need a talented web developer to create a small, yet impactful landing page for my advertising company. Additionally, I require the integration of a payment system and a user registration/login system. Key Requirements: - The landing page needs to be appealing and effective in showcasing our services. - The payment integration must support both Stripe and Credit Card Direct Processing. - A secure user registration and login system should be implemented using email and password. Ideal Candidate: - Proficient in web development with experience in creating user-friendly landing pages. - Prior experience in integrating payment systems, particularly Stripe and Credit Card Direct Processing. - Familiar with implementing secure user login systems with email and password ...
...involves scrapping website using the provided credentials by the client, i am looking for getting the python code as i can run the code myself in the future or integrate it to another system. Key Requirements: - I need approximately 300 data points extracted. - The output for these data points should be organized into a PDF or Word. This project is about creating an automated system to generate instant reports about a company. Only difficulty is the website has drops downs to select the period involved and in those 300 data points actually many come from the same source. Ideal Skills and Experience: - Experience in web scraping (Python) - Proficient in creating PDF documents from extracted data - Adept at handling large amounts of data - Familiarity with tax websites would be...
...looking for a mobile app developer to help me enhance my 6ammart app by adding the following features and integrating a payment gateway. Key Requirements: - **Vouchers Functionality**: I want to include a voucher system in the app to boost customer engagement and retention. The vouchers should be easily redeemable and trackable. - **Payment Gateway Integration**: My preferred payment gateway is Bank Alfalah. The developer will need to ensure smooth and secure transactions within the app. Ideal Skills & Experience: - Previous experience with mobile app development and customization. - Familiarity with loyalty programs and voucher systems. - Proficiency in integrating secure payment gateways, preferably Bank Alfalah. - Strong problem-solving abilities an...
I'm in need of a payment gateway integration for my online business in India. Our backend is developed in PhP. Key Requirements: - **Gateway Preferences**: I'm currently looking into Razorpay or any other option that is both reliable and cost-effective. - **Transaction Type**: I'm primarily focused on setting up the system for one-time payments. Ideal Skills: - **Experience with Indian Payment Gateways**: Understanding of the Indian e-commerce ecosystem and familiarity with the payment gateway landscape in the region is essential. - **Payment Gateway Integration Experience**: Proven experience in integrating payment gateways, especially for one-time transactions. - **Cost-Effective Solutions**: Ability to provide and advise on cost-ef...
